A person who destroys/ruins pranks, much like how party poopers ruin parties.
A prank pooper came along and cut the string ff of my money-on-the-ground prank!
A person who figures out a pranks and avoids/ruins it, much like how party poopers ruin parties.
A prank pooper came along today and cut off the line from my money-on-the-ground prank!