when a man stuffs a sock in his pants or wears a cup to impress women with his penis size he has a decepticock. Usually linked to a man with a tiny penis.
Girl 1: "So I went out with Jason last night and then we went back to his place....
Girl 2: OMG! how was he?
Girl 1: Totally a decepticock.
Girl 2: OMG! how was he?
Girl 1: Totally a decepticock.
by poopy mcwriggles February 26, 2011