Duplex Poo Drop:
Cut a hole in an upper level floor. Cover the hole in saran wrap, staple the saran wrap around the edge, cover the hole with an area rug, walk someone into the hole, don't worry about injury, put a teaming pile of crap below to break the fall.
Hot sauce tennis ball fight:
Get four contestants, put each one in a corner in their undergarments. Give each one a bucket filled with hot sauce & tennis balls, and have a good old tennis ball fight. Let the burn begin.