Boo-a-woop

The thing you say at Six Flags when the ride is going to start.

Annoucer: Okay everybody have a good time Boo-a-woop
Everybody else:Boo-awoop

by fbfe4eukr4h3unyeinrhwuihroc April 16, 2019

boo woop

A fictional, slide-whistle type noise imagined to be made during anal insertion. "Boo woop" can be used when describing anal sex, to get someone's attention, or just for fun in everyday conversation.

"Boo woop! In the pooper!"

by BSG August 14, 2006