Noun - An opening caused by wear (or on purpose when one's jeans are too tight in the thigh area) which allows the pocket and its contents to flop out through the opening. Technically, it's a hernia of the jeans, not the pocket.
Boy1 to Boy2: With that many keys in your pocket, it's no wonder that your jeans have a pocket hernia.
by Klondike708 April 1, 2012