Top Definition
A large penis that is much larger than average, but still smaller than a gigacock and a teracock.
he: what say you polish my megacock, sweetie?
she: totally!
by Killerdove November 23, 2011
The burliest of all penis.
NOT ASIAN, usually black, Hugified penis. The Mega-Cock is a dangerous weapon once inserted in the uterus.
by rlle January 18, 2008

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