My answer to both questions is yes.
When my brother, sister, an I were kids, we received enemas together laying across our bed starting, best I recall, around age six or seven. Depending on the time of year, sometimes we were completely nude, other times only from the waist down, making it easy for our sister to see the state of our penis. In the beginning, my penis didn’t get hard until mom put her finger inside my rectum and started moved it around, to get me lubricated, before inserting the enema nozzle. As I got older, my penis started getting hard as soon mom told us, “go to your bedroom and get undressed, it’s time for a couple of enemas.” Then, as soon as mom put her finger inside me, my penis got even harder, once she started moving it back and forth with a twist, it got even harder still, like a rock. My nor my brothers penis, didn’t get soft again until we were finished expelling. Our sister didn’t miss the state of our penis and would waited until we had been put to bed, to ask questions. She was curious about why it got stiff, and whether it hurt when it got like that. We told her, “we don’t know why it gets stiff, it just does, but it feels good when it does, kind of tingly all over.” Then she told us, “I get a funny feeling in my vagina when mom puts her finger inside my rectum and moves it around.” We asked her, “when did you start feeling funny?” She replied, “like you, when mom put her finger inside me and moved it around. Then, I start getting that funny feeling, when mom told us, “go the the bedroom and get undressed for a couple of enemas.” Now, when mom puts her finger in me, I really start tingling inside and it doesn’t stop until I’m finished on the toilet.” After asking each other a lot of different questions, we talked amongst ourselves about, how it felt when mom’s finger started moving around inside us. What the nozzle felt like going in, an once in, how it felt. What the warm soapy water felt like going in, and what it felt holding it for ten minutes.
We talked about the differences between mom’s and grandma’s enemas. The big difference was, mom gave us enemas together, laying across the bottom bunkbed my brother an I used. And mom always used the adult recital nozzle. With grandma, enemas were one on one, across her lap with the adult recital nozzle. As we got older, she switched us from laying across her lap, to the knee chest position, and changed nozzles. At the time, we thought it was a long curved adult recital nozzle with a bulbous head. We realize later, she had switched us from the adult recital nozzle to a long curved douche nozzle. However, grandma would use the regular adult recital nozzle, if it happened to be attached to her douche/enema bag hanging in the shower, when she took one of us to the bathroom for a couple of enemas. This didn’t happen to often, because her curved douche nozzle was normally attached. It also, looked different than mom’s douche nozzle. Mom’s was a long curved nozzle with four valleys at the end with a hole in each valley. Grandma’s was a long curved nozzle, ending in a large bulbous head with a ring slit around the top edge of the head where water came out. We liked it better than mom’s recital nozzle, because the bulbous head going in and once in place, felt much nicer, went much deeper inside the rectum, making it easier to take and hold the soapy enema for ten minutes or the rinse enema for five minutes.
We had many conversations over the years, after being put to bed at night. Especially after receiving enemas from mom or grandma. Our conversations would generally started with enemas, if we’d just gotten a couple, but drifted to other things. The older we got, the more pointed the questions became about how different things felt. After bed conversations were easy for us, because we shared a bedroom. Our parents home was a two bedroom one bathroom house, hence, we shared a bedroom, even at grandma’s, till our mid to late teens.
A few years later, before we started puberty, our RN grandmother taught us to self administer using both the adult recital and long curved douche nozzle she normally used. Some months later, purely by happenstance, when my sister an I got home from school one afternoon, I was constipated and need the bathroom for a couple of enemas. When I told her, “I was constipated and need the bathroom for a while.” She replied, “I’ve got the same problem.” Paused for a moment, then suggested, we give each other a couple of enema, because as she put it, “I miss mom or grandma giving me an enema.” And truth be known, I missed it as much as she did. So, we took advantage of being home alone, to give each other a couple of enemas. A month or so later, our brother joined us in our after school activity.
As young teenagers curious about our bodies, we explored how they worked, our sister being the most adventurous, helping my brother an I with things we wouldn’t have thought of by ourselves. (Just to note: We never crossed the line with each other.) We soon realized what the feelings we had as youngsters were all about, when we received a couple of enemas from mom or grandma. From being told too, “go to your bedroom and get ready for a couple of enemas”, being prepared for nozzle insertion, nozzle insertion itself, the flow of a soapy or rinse enema starting, the flow as it continued to filled our colons, holding it for 5 or 10 minutes once full, and finally the release. Discovering, girls were no different than boys, each getting as horny as the other. With boys it’s visible via a hard penis, with girls it’s not as visible. Some girls get wet around their vagina and that’s hard to see, even if their naked. For example: my sister got damp when horny, and you couldn’t tell, even when she was completely naked. However, my brother an I easily knew, when one or the other gave her a couple of enemas. My girlfriend got real wet, and was visibly by her damp panties. My wife, on the other hand, was dry when horny, and like my sister, you couldn’t tell even when she was naked. I couldn’t tell when we first got married, if she was horny or not, even while giving her a couple of enemas. However, I learned what signs to look for relatively quick. My girlfriend from High School and her younger sister, were the only two girls I could visibly tell were horny, simply by getting a look at their panties, because both girls got so wet when each got horny. Neither girl needed to be completely undressed, all I need was a look at their panties, to know.