1. This should really go without saying

2. Likely a dietitian.

3. One who knows about your physical health by examining your poop.

4. A person who has a bowel movement, and speaks to it before flushing. (This can be most disturbing when standing outside of the door waiting for the restroom.)

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life