You shouldn't pull pranks on people.
Tony is visiting a friend and feels bored one afternoon while his friend is out buying something to eat.
Tony wants to put some excitement in his life.
Tony turns on one of his friend's movies really loud and acts it out while in the living room.
Tony gets some wires and hooks up the front door knob to the house's 110V AC current.
Tony's friend comes home, sees what Tony is doing, and joins Tony in acting out the film.
Tony's friend comes home, grabs the doorknob, and shakes uncontrollably, dropping the food and injuring him.