When you have sex with a girl in a darkened closet, and having completed the act, step out of the closet and slide open the other door of the closet, to reveal a black man wearing either a tuxedo, or nothing at all besides a top hat and a bow tie, who, after being spotted by the girl, proceeds to tip his hat and say "surprise" or sometimes "boo".
"Dude, i tried to a pull the spooky moster on some chick the other night, but she called the cops."
The Prancing Pony occurs when you gather between a half dozen and a dozen prepubescent girls, remove their clothes, and tie leashes around their necks. You then proceed to tie the other ends of the leashes to the handle of a wagon which you then climb into. Once in the wagon, you remove your pants and begin to whip the girls, who in turn begin to run away, pulling the wagon. Once the girls tire the wagon will catch up to them, and you will proceed to perform sex acts with each of the girls in turn.
"No, no, it's ok officer, they asked me to show them The Prancing Pony."