1. Thought to have been extinct, these annoying creatures with big lips and bald heads can pop out babies faster than an Atari 2600 rapid fire controller extention!
2. BoooooWHOOP!
2. BoooooWHOOP!
by Gimble March 02, 2004

An example of the future of the human race, which isn't particularly good at anything. Jackoffasaurs symbolize the result of the dumbing down of society which is taking place.
by WalkerTexasToast July 19, 2009

That Jackoffasaur acts very stupid
by Dan November 05, 2003

1. Your mother when she tells you, "you should really be careful about spending too much." or "Where did you get the money to buy that?" or "I can't help you right now, I just spend $10,000 on new windows for my house.. BOOOWHOOOP!"
"The jackoffasaur is calling, should I answer?"
by tysontheasshole October 09, 2008
