(slang, vulgar, North America) Immature, foolish behavior; behavior typical of a dumbass.
Speaking of savages, Bruce Cowell and his pack of jock-wannabes, who'd been kicked off every school team because of attitude problems and/or the use of illegal substances, were right on schedule for their weekly feats of dumbassery.
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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.