Lube on thermometer or bumhole

Mom put a small dollop of Vaseline on my anus. The doctor’s office lubricated the thermometer.

No lube

Is lubing of the thermometer and or bumhole done for hygienic and safety reasons?

Why not do both.

I think my mom lubed them both before inserting the thermometer.

When I was a kid, the thermometer was always lubricated with vaseline when my rectal temperature was taken. It's all part of the experience from the past which I continue to this day.

Always dipped in vaseline, but play doc lubes finger first and inserted gently then lubes up thermometer.

Both

Mostly bumhole, in and around it. Sometimes both this and on the thermometer.

My role play “doctor” lubes my anus thoroughly with his gloved finger before taking my rectal temp to compare it with my penis temp.

I must admit I do both. First I place rectal thermometer inside a jar with coconut oil, and leave it right there until I finish lube my anus, using the same coconut oil. Second, when I finish that “ritual”, I just insert the rectal thermometer inside of my lovely ass. I feel very comfortable and very excited when I feel the thermometer slipping thru my anus.

Since I now use lubricant packets (kept in the fridge), I dip the thermometer in the packet, twirl it around then insert it into her rectum. It goes right in without the need to lube the actual anus.

Until I was 18 it was always the thermometer in the vaseline jar. Bid smear on the thermomer and blob on the tip. Then my cheeks parted and inserted.

At the doctor it was the thermometer and applied to my anus. In play a finger swiped across your bottom in a slow gradual motion is physically intense and embarassing.

I like to do both. Put a dab on the end of the thermometer then take what's left and rub it on that little bung.

I also like to do both. After lubricating the thermometer, I will lubricate my finger and gently rub the area around the anus, before gently inserting my finger to check for any possible obstruction. I my also massage a bit while my finger is in place. Then, I insert the thermometer and mke sure it is properly seated, checking occasionally, while the time passes.

For me it was exactly as btmee explained below.

As a child I remember Vaseline being applied to both.

Think only the thermometer was lubed in my childhood. For Play, I like to lube only my anus.

It wasn't just on the tip of the thermometer, but was smeared half way down the thermometer itself. Then the finger, which had become lubricated was inserted as far as it would go.

Lube on the thermometer only is fine. Anything more than that, and you risk having the thermometer slip out. The anus is not that tight, for most people.

Having it on both helps but I have noticed sometimes in medical settings the provider seems unwilling to lube the bottom especially in cases of a opposite sex provider. Too much risk of improper behavior claims etc.