A man does pullups on an upside down bike hanging on the ceiling in a garage. He does a pose, the bike falls, and he lands on his back.
A boy jumps up to do a pull up on a bar across a doorway at home and falls when the bar comes down.
A man swings/ hangs from a pull up bar on a door frame indoors, jumps, accidentally pushes it off the frame, and falls on his face.
A teen girl falls off of a hanging bar while trying to do pullups in a garage.