Top Definition
A small man with a giant ego and a even smaller penis. Arrogant, unknowledgeable, illeterate, incompetent, moronic, illogical, can be seen making monkey faces and picking his nose on live TV. Directly releated to, dickhead, penisface, ignoramus, pinnhead and superchicken.
Jim: I can't believe that George Bush is our president.
Pat: Yeah, everybody knows he's a Penissaurus Maximus.
by Cal Cahoones April 07, 2005
5 Words related to Penissaurus Maximus

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