Why is the butt the cleanest part on the human body?

Answer 1

The butt is not the cleanest part of the human body. The eyeballs are. Despite constantly being exposed to the bacteria-filled world, your eyes are constantly coated in a layer of tears every time you blink, and this kills bacteria.

The butt isn't necessarily dirty, but it isn't as clean as the eyeballs. Now, the anus can be dirty. Fecal matter comes out of the anus, and many people are afraid to clean the anus when they shower.

Anyway, the butt isn't the cleanest part of the body, it's the eyeballs.