El Cucuy is a scary Mexican urban legend that has been passed down to children by parents, and according to the story, El Cucuy is an ugly creature with razor sharp teeth who waits in the shadows or hides under your bed or in your closet when night falls. He kidnaps children who misbehave and takes them away to devour them. This story is told by parents in order to trick children into obedience, then those kids grow up telling their children.