I'd stick it in the pooper
Putting something, usually a penis, up someone's butt. Happens everywhere from 4chan to the back of a bus. Usually ends with someone screaming or a Japanese man yelling at a phone.
He stuck it in the pooper and the whole bus heard him
I saw it on the wall of the bathroom, and I laughed so hard I peed
That guy stuck it in the pooper and now he's in the hospital