An indication of explicit sexual motive on an impromptu or capricious schedule through the use of cellular communication.
When a butt call is made to prior hookup, the caller has engaged in an accidental booty call and may require booty call protection.
Joe: Bro Bro Bro, dis madd cute gurl who I been datin called me five times y'trday...turns out it was just a bunch of butt calls. She be madd confusing, Bro.
Bro: Dat shit cray. She should have her friends get her some booty call protection.