Is KY or Vaseline better to lubricate the rectal thermometer

I definitely prefer KY

Hands down (And Bom Bom UP!!) Vaseline, all the way.

KY may be easier to clean up the rectal thermometer or enema nozzle, but Vaseline is the gold standard in my mind. My mom used that exclusively. If you open the Vaseline jar, you would see a bunch of wholes from where the thermometer had been lubricated prior to going in my bottom or one of my siblings. Also, it was used when we got the enema bulb which was quite frequent as prepuberty kid.

Definitely a personal preference but I prefer Vaseline but I’ve had multiple people I’ve prefer KY. Vaseline just gives that extra cool and thick feel that gives you that shock. Vaseline is very smooth and using that can REALLY help the thermometer slide right in

I’ve had both used on me and enjoy them both. In the days of glass thermometers Vaseline was always used in hospitals and doctors offices. When they were replaced by digital thermometers KY was the lube of choice. For me Vaseline brings back good memories but the thermometer is much easier to clean when using KY or other water-soluble lubes.

Vaseline on a rectal thermometer is hot and sexy, the way it slips in the butt, without any effort, and drips and glistens from the body heat, when removed. KY jelly, is clinical, but not as messy to clean up. It also looks sexy on a thermometer. Vaseline is great for anal sex too.

K-Y and rectal thermometers are a good combo. Surgilube is also used when taking a rectal temp.

However, for inserting an enema nozzle or tube several times that result in multiple releases, Vaseline's petroleum base lubes and coats the anus much better – and it's more soothing – than water-based lubes such as K-Y and Surgilube.

Have had SO’s in the past that went wild over Surgi-lube at their annuals. Coming home dripping with it, squishing between their cheeks and labia was always fun.

Vaseline is more fun for anal probing and thermometer play. We use it alot. However I would not use it for sex again as once some went up my urethra and caused alot of pain.