Someone who has a small penis that, despite its size, is extremely freaky when used. This diminutive dynamo might be compact, but it's packed with an impressive amount of enthusiasm and energy. Often underestimated, the pocket rocket proves that great things can come in small packages.( could also be referenced as someone’s penis)
doing or having a pocket rocket is masterbating or "wanking/jacking off" inside ones own pocket, simply accomplished by reaching into the pocket of ones trousers, also known as a stealth wank. can be performend in public if user has masterd the techniqe.
this is an easy was to pleasure ones self while staying annonymus.
guy 1: dude why are you pulling a face
guy 2:we have lift off guy 1:awww no way...POCKET ROCKET