Men who don't flush public toilets

[Gawdzilla Sama]

Them there's the guys who don't wash their hands after.

Old Joke:

A fellow from Yale and a fellow from Harvard are using the urinals. Afterwards, the Yale guy doesn't wash his hands.

The Harvard graduate says "At Harvard, they teach us to wash our hands after using the urinal!"

To which the Yale guy replied:

"At Yale, they teach us not to piss on our hands".

A student uses the bathroom in a university hall. He sees another man come in and after a bit says, "You're a chemistry major."

"How did you know that?"

"You washed your hands BEFORE you peed."