1 definition by penisaurusrex

Top Definition
1. The mightiest of all prehistoric creatures that roamed the Earth and even Mars.

2. A name given to a man by other men, because even they can recognize that he is better than them.
1. The Penisaurus Rex slowly devoured what was left of the Loch Ness Monster after it dared to challenge him.

2. Man 1: "dude, Robby is such a penisaurus rex.

Man 2: "I know! He is so much better than us."
by penisaurusrex October 30, 2011

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