In the part where the Joker goes into Vicki's apartment and shoots Bruce, you see Bruce fall down in the corner of the room.The camera switches over to the Joker and he says,"Never rub another man's rhubarb." Then it switches over to Bruce who is pretending to be dead. You see that his right hand it on the outside of his leg.Then it switched back to the Joker who walks over to Vicki and grabs her hand. In the background you can see Bruce pretending to be dead in the corner. This time his right hand is on the inside of his leg. Must have had a spasm.