I've seen a few Russian "Dr. Allas" in my childhood. Brings back memories. The description is spot on. A pretty mid-thirties woman with a velvet voice purring something like "Don't be shy, sweetheart. I've seen hundreds of little pee-pees. I don't have all day to wait for you to drop your briefs."
Physicians (not just pediatricians) are different over there. First, they are predominantly women. Only surgery and a few other specialties are favored by men. The pediatrics are almost entirely female if you are wondering.
Second, while they won't do anything unprofessional like jerking off a 9y.o., they also don't try as hard to act "professionally" either: to avoid the patient's embarrassment, which is not considered "discomfort" at all. Not at standard government-ran pediatric clinics. Life is much harsher over there. Those overworked and underpaid "surgeon physicians" (not to confuse with the real operating surgeons), who specialize in genitalia among other things like the skeletal and muscle development, see kids with deformed or broken bones and all sorts of (healing) trauma, so some healthy boy's shyness seems rather cute compared to another kid's pain.
Love childhood memories in this thread. Not so much the all-adult mommy/son play and adult submission scenes. Nor I am fascinated with photos of all-white adult diapers on somebody's fat hairy belly, sorry. The reason I am saying this, is no one 18+ can be humiliated in that context. First because you'd be enjoying it. And second, because no onlookers would be laughing at your leaked diaper or wet/messy pants. You'll see two types of reaction: mostly compassion assuming you are disabled or otherwise ill, and a few disgusted looks. But no typical condescending smirks other moms would give you (and your mom or babysitter) if you wet your pants at some playground in front of everybody at the age of five. I hate to break it to you: it can only happen when you are physically little, powerless, and vulnerable. That time is gone.
So drop the safe 18+ disclaimers and indulge in sweet childhood memories. If you don't have any, like myself (no one humiliated me when I was little), think up some "what if" scenario and post it here. Or better yet play it online with someone passionate about humiliating you - in exchange for humiliating or otherwise pleasing her when you change turns. That means fully regressing into your favorite "vulnerable" age and trying to re-experience the heightened 7-8y.o. emotions: fear, despair, frustration with adults always getting their way, and yes, acute embarrassment of being treated like a toddler.
I'd say the oldest age I could have been embarrassed e.g. at some naked check-up by two young and pretty females (a doctor and a nurse) would have been 16-17. Seeing them exchange looks or comments like "He's rather on the small side" and "Yeah, a little underdeveloped, though everything seems normal." A male doctor saying that would have not embarrassed me at all. Such conversation is ideal in one's mom's presence. The topic of masturbation (with mild scolding/concern) is only embarrassing at the age of 10-14, as anyone older than 14 doesn't consider it shameful or forbidden. As far, as everything else, once I went to college and lost my virginity, all embarrassment went with it too. A shy boy became a man. Nostalgic about that shyness and wanting to relive it in the virtual world, like many here. I tried it two times with a pro dominatrix, and no, it didn't happen despite the perfect play script. I was not embarrassed at all.
Let's go back into that exam room. The mom's or big sister's presence during the exam or some rather intimate treatment e.g. enema, RT, or foreskin manipulation, is not comforting. On the opposite, I'd rather not have any of my relatives there, because then no one close to me would know/remember the humiliating things the doctors and nurses subjected me to. Even if my mom would never talk about them at home, I'd know she saw it. And if I overhear her discussing it with her friend on the phone or in person, that would take things to the whole new level of embarrassment. Another scenario is the doctor or nurse teaching my mom and/or big sister how to perform some humiliating treatment (enema, RT, or genital/rectal exam, etc.) to continue doing them at home.
Sit back, relax, and mentally regress into the most embarrassing prepubescent age: 7-9y.o. for me, when adults could still treat you as a preschooler. Somewhat harder to call one "little" a couple of years later, when the first pubic hair appears. In any case here's my list of humiliating things an inventive sadistic mother can subject her son to at that age:
1. I'll start with the most intense and also the simplest - IMO and in my virtual world. You'd be diaper-punished, walking around the house in just a diaper and a short t-shirt, that barely covers your belly-button. Your mommy invites guests: young women like her and their teenage daughters/sisters to show you off. You struggle to pretend it's no big deal for you, ordered to play in front of the guests on the living room floor with your blocks and toy trucks, listening to their endless "awws", "what a cute little boy you have", and "he looks absolutely adorable in this diaper", not to mention remarks like "looks like he's wet already". Your mommy is in no rush to change you. She'd wait until the laxative takes effect and you loudly mess yourself in front of everyone too, wishing the Earth would open and swallow you, when those teenage girls mockingly hold their cute upturned noses and giggle how funny it is to watch little boys do it.
Somehow you manage not to flood your diaper at the same time with everyone watching. You are afraid, it'd leak, adding to your predicament - that full it is by now. Having heard your mom announce she has to change you, you figure, you'd just hold your sharp #1 urge a bit longer, and pee in the new diaper. To your horror she starts preparing the table (or the couch) right there, in the living room, clearly indicating she'd change you in front of everyone. The guests, particularly the teenage girls can hardly wait.
You are put on the makeshift "changing table", laid legs-up on your back in the diaper position, and wiped with cold baby wipes. She keeps them in the fridge. It's punishment after all. She explains, that diaper changes should not be too comfortable for a kid your age and everyone agrees. You shiver and squirm, desperately trying to evade the unpleasant touch to your most sensitive spots between your legs. You try to break free from your mom's firm hold, and kick your legs, making the guests giggle and call you a restless baby. One may offer to help and hold you. Or your mom would pick the cutest girl you have a secret crush on and ask her to help.
The worst tickle is yet to come, when she's done wiping and squeezes a drop of diaper rash cream on her finger to thoroughly coat your diaper area. By now your mom expertly calculated when you'd pee next, since you do it every 30 minutes or maybe even more often having made to drink a lot of juice, milk, and water to constantly wet your diaper. She knows the tell-tale signs like baby boy erections, which she points out to her guests, who laugh and call it cute, agreeing it only means one thing and she shouldn't stand right in front of you. The discussion of boy diaper changes ensues: "be careful when changing boys", "favorite boy's fun on the changing table", and "do they do it on purpose?", making your face redder. Especially knowing the inevitable is about to happen. Though you still hope you'd manage to hold it until the diaper change is over. Too embarrassed to tell your mom you need to pee in front of everybody and afraid, she'd just say "Go ahead, sweetie. Show us your baby boy fountain."
You are wondering why she's taking her time, almost deliberately using a very light touch to make the tickle worse. Is she trying to make you lose control and spurt a pee fountain? And then it happens, when her fingers are playing with the back of your ball sack. Shaking with your whole body, you can't take the excruciating tickle anymore, and your aching willy bursts with a convulsive spurt of pee. Followed by gasps, giggles, "wows", "awws", "so cute when little boys do that", "I can't believe an eight year old peed during a diaper change", and similar comments. Your mom smirks and takes a hold of your willy, pointing the stream at the diaper under you. She waits until you stop, asks "All done?" and tickles your little balls again to make sure you peed everything out. One of the guests gets a clue: "You tickled him to pee, so he'll keep the new diaper dry longer. Smart." Others laugh: "Every little boy's most ticklish spot" and "Mine is also so ticklish down there".
Another version could be asking (offering really) one of the unsuspecting teenage girls to put the diaper cream on your bottom and boy parts - until you convulsively pee on her for everyone's amusement. Then of course your mom would explain to the shocked girl that she should have watched for signs and ask if she noticed your strained pee-pee. I don't know who wouldn't die of shame in this situation.
2. The next one is obvious too. Your pediatric nurse mom decided to give you an enema in a diaper position with a 20-something pregnant neighbor watching. She's expecting a boy, so your mom invited her to watch - to teach her how to deal with kid's constipation, which affects boys more often, than girls. If that wasn't embarrassing enough, her pretty 12y.o. sister came along because she wants to learn too, not to mention adores baby boys. All constipation treatments will be demonstrated: suppositories or soap sticks, a soaped up rectal thermometer, that should be tried before the enema, as many times that mild irritation of the colon is enough to induce a BM, and of course the enema with either making you expel into the plastic potty in front of everyone, or diapering you like a "real baby". A bath is likely to follow, since things got a little messy - showing your guests how to thoroughly clean dirty little bottoms and delicate boy bits. Your mom may even let the 12y.o. try after she asks too many times.
There are other variations like your mom teaching an RT, enema, or general baby care class for your suburban community, using you as the "baby".
3. The diaper punishment and being asked to use you diaper in front of everyone is embarrassing enough, but not as humiliating, as your pants and underwear (pull-ups) pulled down to stand you before the plastic potty and ask you to pee in it like a "big boy". Of course in the middle of the living room with your mom holding your pee-pee, since you are too little to be trusted to aim it. Goes without saying, there will be (female) guests your mom wants you to prove what a big boy you are to. Particularly giggling baby care crazed 12-15y.o. girls, half of which you have a secret crush on at the age of eight. Everyone is asking you to do your tinkles, piddles, or whatever they call it in the sweetest babytalk, and then praising you when you finally give in and do it, with endless "awws" and "how cute". Followed by the willy shaking and wiping ritual.
If it's #2 - on the same potty in the middle of the living room facing the couch everyone sat to watch on, you'd be asked to keep your legs apart, so adults can see you are doing your little boy's business, and of course lots of babytalk cheering and praising. The butt wiping will take place on your back in the diaper position - with cold baby wipes. Will you be allowed to wear big boy pants upon your successful performance or put back in pull-ups "just in case" is up to your mom.
If you failed (after the time ran out), you'd hear a condescending sigh explaining to everyone how you are not ready for the potty, and thus back in diapers. Then someone (if not your mom herself) would suggest an enema to help you go potty.
4. If you graduated from your humiliating public potty training, you are still not out of the woods yet. Your big sister may be tasked with checking how well you wipe your bottom after going #2. Which she'd thoroughly enjoy, especially in the presence of her school friends. You are to walk out of the bathroom with your pants down, bend over and let her use a baby wipe on your bottom. If it has a dirty spot (after she pushes the wipe deep into your hole, duh), your pants are taken off completely and you are laid in a diaper position and wiped like an 18-months baby with everyone watching and cooing babytalk to tease you. Then probably creamed to prevent the "diaper rash". She may leave you bottomless (common during potty training), since she is disappointed and has no choice, but to restart your potty training. So from now on you are to use your plastic potty in the middle of the living room with her wiping your butt, since you cannot be trusted with it yet. Either that, or diapers. But no big boy underwear and pants.
5. If you throw a tantrum refusing to wear explicitly babyish diapers as a punishment for your bedwetting, your mom may suddenly give in, making you feel like you dodged the bullet. Only to go shopping with you to some busy mall and stage an accident there. Then, pulled by her hand into the nearest baby store to buy baby wipes and Pampers #6 that still fit you, with everyone gawking at your wet crotch and the load under your bottom, you'd recall the strange taste of the chocolate milk she gave you after the breakfast. I'll let you imagine the ensuing public diaper change. Not in the ladies room, as some may expect. On the bench in the middle of the mall hall with a giggling teenage girl audience.
A smart mom would walk you around the mall for a while, watching you cringe with every step in the wet and messy pants. She'd wait until the diuretic and laxative start to work again and time the diaper change to make sure her soft tickling touch makes you lose control lying on the bench in the helpless diaper position. See #1. The giggling onlookers would surely love the show and conclude you wet and messed yourself on purpose to be put back in diapers, since your second accident during the change proves how much you like acting like a diaper age toddler. Many would call it no accident, and shame you telling you an eight year old should know better.
6. Being bathed by your sister five years older than you is enjoyable up until six. Then you'd start getting that creeping feeling that something's not right and you are too old for that. Asking your mom to let you shower on your own is pointless. She still thinks that nine year olds cannot shower properly and need to be bathed by adults. A 14y.o. girl bathing you is a responsible adult of course. As well, as all of her school friends, who'd "accidentally" stop by right around your bathtime, invited into the bathroom to watch and help e.g. hold you still, while your sister deliberately torments you with unbearable tickle lathering up your sensitive balls. Or worse - puts her finger into your hiney.
She'd also let her friends do it - teaching them how to properly bath a little boy, under her supervision. And of course you'd be required to go potty in her and many times their presence before the bath, because little boys are notorious for peeing in the tub. Which, even after making you pee in the plastic potty in front of everyone before the bath, she'd still make sure to happen to entertain her guests with a convulsive baby boy fountain again and perhaps diaper you after the bath, or otherwise creatively punish. She knows your vulnerable spots and the right manipulations. You have no chance, when she pulls back your foreskin and rubs the super-sensitive tip of your willy with a soapy finger until you, on the verge of fainting from extreme tingling sensation, spurt a pee fountain. Met with condescending scolding and giggles.
7. A take on #6: Russian exotica, which, I am not kidding you, still happens today, though at a lesser extent it did during the Soviet era with its "pioneer" (Soviet version of boy/girl scout) camps. Summer camps accept kids from 6-7 appr. to 14-15. The kids are grouped by age - into 30ish squads with the equal number of boys and girls. The squads are numbered from the oldest to youngest, so the 15y.olds will be in the Squad #1, while (depending in the size of the camp), the last (youngest squad) will have a 20+ number. There were two squad leaders/caretakers during the "pioneer" times: typically a 19-22y.o. college girl (boys considered those summer jobs beneath them) and a late 20s or early 30s "educator" to oversee things and help. Many squads had two college age girls in charge since that job didn't pay well for a person out of college with a job.
Not sure how it is now, when I was there, we had a shower day once a week, because there was only a couple of school locker room style shower halls. There were no showers in the squad barracks. Basic bathrooms at best. Many camps are still like that even today. Again, not sure how it's changed, but it it was a common belief back then, that no one younger than ten can do a proper job of showering. It didn't matter if some, like myself, already started to shower on our own at home. There were no exceptions, so no one feels offended.
So at the very least squad leaders washed their and other kids under the age of ten. The leader girls typically teamed up (with other youngest squads leaders) and worked in shifts to wash everyone within the allowed 30-45 minutes, before the next squad came in. Boys and girls separately of course. The shower crew wore bikinis since there was water and soap duds everywhere. Unleash your imagination, though I must disappoint you, no one undressed completely or engaged in any dirty activity. They just washed visibly embarrassed 6-9y.o. kids. It was a shock for many when the previous squad whispered stories how everyone is made to undress, and that the squad leader girls wash them completely, including the privates. Then of course it happened, when the boys were given those orders to remove all their clothing and line up to wait their turn to go into the next free shower stall.
It gets more interesting. A few camps either couldn't form big enough bathing crews or the squad leaders got tired. It's quite exhausting spending half a day washing and drying endless little bottoms, no matter how cute. So they decided to ask the first and second squad to help: the squad members, not the leaders. They typically asked both boys and girls, but the boys refused being afraid of the gay stigma. Needless to say the boys were not trusted at all to wash little girls. That's just wrong, don't you think? Though 14-15y.o. girls washing 6-9y.o wieners and balls was perfectly fine. I wholeheartedly support those "double standards" in my world, so eat me.
First the leaders asked if anyone had a little brother or nephew they bathed at home. But there typically was a shortage of bathing staff anyway, so they allowed anyone to participate. One of the most experienced leader girls if not the camp nurse herself typically did a demo when the very first squad came into the showers, taking one of the naked boys lined up to be showered and thoroughly washing him with detailed instructions what to pay attention to. According to stories posted online the wash crew rarely used sponges, and was specifically instructed to use their bare hands to wash delicate boy parts. Not that anyone would miss that opportunity anyway. And that was it: bossy 14-15 girls ordering embarrassed naked 6-9y.o. boys around and washing them under the college age squad leader or "educator" supervision.
I attended such camps two times: at the age of 11 and 12. They sucked: the food, activities, and everything else. Though the girls were super-cute... if I wasn't that shy at that age. My parents sent me there to become "more social" - didn't work. As far, as the action above, I was never subjected to that humiliation. Though the first time our leader girl (a pretty 18y.o.) was present there watching us: to keep the order and make sure no one runs and slips.
Those were just a few domestic humiliation scenarios. Pediatric offices and hospitals provide endless potential, that cannot possibly fit in this thread, let alone a single post.