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The owner of a mockasaurus. One who claims to have a large penis (cockasaurus) but it discovered to have an average or below average endowment (mockasaurus).
Bob: Yo I got a cockasaurus!

Mary: TAKE IT OFF NOW!!!

(next morning)

Mary: you fucktard Mockasaur, you lied to me and took my virginity with ur little mcokasaurus!

Bob: You're 38 and a virgin?

Mary: Ha! Joke's on you! I'm 58! Here, hold my dentures.

Bob: Is it cold in here?
Mary: Dont make excuses...
by SychoSurge January 13, 2009
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