(North America, slang, vulgar, idiomatic) To misbehave or act defiantly.
They've been showing their butts (misbehaving), and so you know they haven't been out.
No comments yet — say something.
Add your own interpretation of "show one's butt".
Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.