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n. bare ass; the naked buttocks. (see also hang a BA (at someone).) The guy was running around with his BA showing.

hang a BA (at someone)

tv. to display one’s buttocks to someone in derision. (A BA is a bare ass.) He went to the window and hung a BA—just for the hell of it.
See also: Ba, hang, someone

hang a BA

See also: Ba, hang