1. A cock that looks deceptively small, but once it's full sized can create a river of bludge.

2. A man who manages to consistently convince women he's sensitive, and predictably turns into a bastard when he has slept with them.
Baby don't be fooled, this decepticock will ruin you

Baby don't be fooled, he's a decepticock.
by rickster rick March 20, 2010
2 more definitions
Top Definition
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.
by poopy mcwriggles February 25, 2011
One who stuffs his pants to look like his genitalia is bigger than it really is.
She thought she was getting lucky but he turned out to be a Decepticock.
by C4pta1n Am3r1c4 February 06, 2015

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