hang a BA
hang a BA (at someone)
rude slang To show one's bare buttocks, as to an unsuspecting audience. "BA" is an abbreviation for "bare ass." Please tell me you didn't hang a BA at the headmaster after graduation.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
hang a BAverb
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.