Is KY or Vaseline better to lubricate the rectal thermometer

Which lube to use ? Try Vaseline, and KY, then decide. They are both entirely different, but achieve the same result. As an adult, unless you have a tiny bottom, or really tight anus, (both of which probably go together),you shouldn't need any lube. It's pretty hard to feel the thermometer in your butt, and lube seems to decrease the sensation even more. The neat thing about Vaseline, is that it's the classic lubricant, that those of us over 50 would remember. KY is kind of the clinical and modern replacement. It's almost like hair gel. Nothing sexy about it. Vaseline melts from body heat, and drips off of the thermometer....that's what makes it special !

I Guess I'm "Old School", but I like the feel of Vaseline on a rectal thermometer bulb. Growing up, it was my mother's choice for a rectal temperature and i came to like it. My nurses in the hospital used K-Y jelly and it was very slick and cold. It also tended to make the thermometer slide out as I lay on my stomach.

Vaseline for certain.

My Mom always used vaseline on both on the thermometer and the enema nozzle. I don't know if they had KY back in the 60's.

Yes, Kid; they did have water soluble lubing jell in the 60's. I sold one called, "Massengill Lubricating Jelly", and it was popular because it had benzocaine in it and was sterile. I believe that it was preferred for catheter insertion, because of the numbing content.

I have always found it much harder to clean whatever I stick up my ass (enema nozzles, anal toys) when I used Vaseline. KY works well and quickly washes off in warm water and soap.

I prefer a water based lube.

I really do not play with RT, but I have noticed vaseline is better for bulb enemas as it stays on the nozzle longer where the KY washes off with the insertions. Other than that I'm a water based lube fan.

I like the feel of Vaseline on a rectal thermometer bulb.

I'll give you odds that the only thing that's noticeably different is temperature. KY is water based so it cools rapidly due to evaporation. Vaseline is non aqueous so there's no evaporative cooling.

I take my temp rectally every day. I like both K Y and Vaseline. They both do the job well making it comfortable for the thermometer to slide in and out of my rosebud hole.

I have always used Vaseline. That stuff is like the slipperiest stuff on the planet! 😄

It also stays slippery while KY dries up.

For rectal temp I prefer Vaseline

Both are good. 😉 As a young boy my temperature was taken while lubrication most times with baby oil.

No lube…just wet and then up the ass. It will stay there. With lube it wil escape and you have to hold it. In the hospital they have a trick if it flips out they put it in and pulling the underwear up, or your pj, so it can not come out.

Normally use either KY or similar for any kind of anal penetration. Sometimes will just slip the thermometer in more or less dry

I have used KY, but my go to is Vaseline. To spice things up, a little Vicks is nice.

KY or similar -- Easy to clean, compatible with condoms.

Vaseline -- Lasts longer, reminds my wife and I of medical procedures of our youth.

I grew up in a time that Vaseline was the go-to lubricant. At home, there was no option, as when I was called into my mother's room, there was already a jar of Vaseline on her nightstand, and the thermometer case next to it. At the pediatrician, once it was decided I would be given a rectal temperature, the nurse would place a dollop on a paper towel, and then lubricate the thermometer before telling me to be still for her and inserting it. My mother also used Vaseline on me for my enemas and for suppositories.

I prefer to use Vaseline for lubricating rectal thermometers and enema nozzles.

I prefer Vaseline for rectal applications and something water soluble for the front. Vaseline seems to not dissolve and dry out which is good on nozzles and other such anal implements.

I keep both around. I still have the old, well used jar of Vaseline that my mom used to use when I was a kid. Typically if I'm using lube when taking my own temp, I will use KY, as it's easier to clean up. If I'm feeling nostalgic, I'll use the Vaseline. When I was with my first fiancee and was taking her temp fairly often, it was always Vaseline because she said that the KY made the thermometer feel cold going in. My last RT play partner hated when I'd use Vaseline because of the difficulty in cleaning up. So it's all personal preference, and if I'm taking your temp, you'll be given an option of what one you want.

I’d say both are good to use.

I have tried water soluble lubricants but much prefer the traditional lubricant. There was always a jar of yellow petroleum jelly next to the thermometer when I was growing up. It had a distinctive smell that became part of the ritual. The same jelly was in use at medical school where I learned how to lubricate the thermometer under the watchful eye of my instructor. The same product, now branded Vaseline, is available in supermarkets here. It also comes in white but this feels different on the fingers and does not have much of an odor.

Vaseline seems to be the preferred lubricant. But KY is much easier to clean up and not leave the greasy feeling between your cheeks. Unless of course that feeling keeps the pleasure going.

I like Vaseline .

I find Vaseline is best. It slides in easily .

My doctor uses Vaseline.

I am 100% on the KY boat. The original thicker gel - some of the other ‘flavors’ are too thin. To me its strictly a mess/clean up thing. Vaseline has to be wiped, doesnt wash off well, cant go near the vagina, and will stain underwear, sheets, towels, etc. Who needs that? KY washes off perfectly and easily.

An additional benefit of Vaseline: when my wife or myself wanted to remind the spouse that the glass rectal thermometer was to be used, it was inserted into the vaseline jar and left on the bedside table, along with the cotton swabs and alcohol to clean it.

Granted, we've also done that with jelly (left the thermometer in its case along the tube of lubricant etc.) but the thermometer "ready for use" inside the jar is a sight.