Oh so it was only the 🌡 they put up there?

The thermometer is use to measure the degrees of your body temp. Like tympanic which is for the ear, oral temp for the mouth, rectal for the bottom, axillary for the under arm/armpit and temporal scanner for the forehead.
Suppository is usually like a laxative especially if you are constipated, they somehow use this.

The bottom way of checking seems very messy

I guess so.