Hagasaurus 

A ginormous hag that makes your life miserable, Unfortunately not extinct and running rampant in some workplaces.

Terry is a real Hagasaurus making threats like that.

Hagasaurus by vikingprincess21 March 4, 2010

Tagasaurus Rex 

Someone who far too regularly tags photos on Facebook at every possible occasion. These photos are usually unwanted.

Izzie: Hey Phil and Dan, that girl Holly Rodrigues has tagged another Facebook photo of you.
Phil: For fucks sake Rodrigues...
Dan: That girl is such a fucking Tagasaurus Rex!

Tagasaurus Rex by bbbots February 24, 2012

Hugasaurus Giganticock 

A penis so large it CRUSHES GALAXIES

"I love his hugasaurus giganticock. It could crush my galaxy any day."

Hugasaurus Giganticock by hugasaurus of the giganticock January 6, 2004

Lagasaurus Rex 

-MikaelaElizabethKirkeby
-someone who lags mad ass
-something that takes a long time
-time consuming people

The fat kid in the P.E. class became known as a Lagasaurus Rex when it took him an hour to run a mile

Lagasaurus Rex by OCforlife November 4, 2010

Hackasaurus Wretch

A lifelong smoker who continues to light up, while coughing and hacking to the point of vomiting while they are enjoying their cigarette.

Wife: Wow, did you hear our neighbor this morning with her a.m. cig? She didn't stop hacking. She sounded like she was dying.

Husband: Yeah, she's a total Hackasaurus Wretch.

Hackasaurus Wretch by whocaresaboutNY January 1, 2011

vagasaurus rex 

the greatest of all the ginasaurs.

John, quit being a vagasaurus rex, and go get that bitches number. FAG!

vagasaurus rex by The Chase R Rogers January 18, 2008

Fagasaurus Rex 

one who is such a big fag, the only thing large enough to compare their gayness to is a dinosaur.

Quit touching my leg Fagasaurus Rex.

Fagasaurus Rex by friedchicken347 July 3, 2010