The movie 'Cop Out' has had a couple of titles -- well, at least one other title, 'A Couple of Dicks' -- and now it has a trailer, which hit the Internet over the holiday weekend.

'Cop Out' is a variant of the classic cop buddy movies, and it stars Bruce Willis and Tracy Morgan as the "dicks" and Seann William Scott as the bad guy ... although in the trailer Scott (and his mischievous grin) serves more as a comedic foil to Willis and Morgan than a Public Enemy No. 1. Watch the trailer after the jump.