skinny drink of water

US slang: (noun) A person with a thin, gangly body. Also used with: thin, scrawny, tall

"Who's that skinny drink of water?"
The tall drink of water was just up my alley.

butt weep

Diarria so bad, lengthy, or reoccurring that by the end of the day your asshole and surrounds are painfully scorched.

Your ass feels acid etched after a round of diarria.

"Damn, I musta ate something bad, I got butt weep."
"Remind me not to eat that again, it'll make my butt weep."