Dodgeball - Magic Wrench?
When Patches O'Houlihan (Rip Torn) begins to train the Average Joe's Gym guys the art of Dodgeball, he breaks out a bag full of wrenches to throw at the guys from his wheelchair. He yells, "If you can dodge a wrench, you can dodge a ball." He then hurls the first wrench at Justin (Justin Long) and hits him square in the face. The wrench he throws is about a 10" Crescent wrench. Yet when the camera flashes to Justin writhing in pain on the floor about five seconds later, you see that the wrench that is lying next to him is a standard open/box end wrench, not the Crescent.