You are sitting in Arkham Asylum and you hear a menacing laugh behind you. Suddenly a explosion hits the back of your cell and bricks and rocks come flying at you. You look up from the rumble and you see The Joker with a bazooka.

"Ah damn it! This isn't Harley's cell! Only thing in this cell is this buffoon!" Joker says bashing one of his henchmen in the head with the side of the bazooka.