premise:  My dorm mates were incredible pranksters. One day they filled a thirty gallon Rubbermaid trash can with water. "The opened the laundry room door, propping the can on the door's top." "As the floor manager entered the laundry room, they nudged the door." The entire thirty gallons poured down on the manager in an icy flood!
hypothesis:  They started laughing. ends after The entire thirty gallons pour down on the manager in an icy flood 