Top Definition
-A term used to define something rediculous. Coined by Ryan Ford

-A yellow, Microsoft-Paint spawned, red and purple spotted, rather angry dinosaur.
-"that was utterly perpostisaurous!" "Cuz he's perposterous like that" -kinda long load
by Lennyist Leader April 18, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.