poopy thumb

verb-to forcefully penetrate one's anus with your thumb

"That girl with the big butt is asking for a poopy thumb."

by Brian Coonway November 23, 2007

Poop Thumb

when you stick your thumb in your anus and when you take it out, there is a large quantity of fecal matter on your thumb. You then proceed to chase your friends around screaming poop thumb.

i know an Asian boy who once stuck his thumb in his anus and had a poop thumb

by mr. abc123d4 May 14, 2011