momasaurus 

over protective, yet micro-managing mother who uses guilt to try and make you change your mind

Everytime I try to explain to my momasaurus my future plans she gets upset and then tries to discuss how if I do it a different way my life would be easier.

momasaurus by ooober goober March 25, 2010

mackasaurus

a total playa. A guy who just spits game nonstop.

-Did you see scully hitting on those sophomores last night?
-Yeah, he was being a total mackasaurus.

mackasaurus by fukgoombchicks November 10, 2009

mathasaurus rex 

one who likes to shriek and growl when sexually excited by math problems, sometimes waving their arms in a dinosaur-like fashion.

when jimmy began to grunt as he started the math test, there was no doubt he was a mathasaurus rex.

mathasaurus rex by winerschnitzal111 June 9, 2010

Mika (Mikasaurus) 

The most amazing non-professional singer in the entire universe. He is also the last remaining Mikasaurus in the entire world. He's really nice and funny and awesome at everything. He will completely deny these facts because he's too modest. He's amazing and I love him. (:

"Where is Mika (mikasaurus)?"
'Off being amazing."

Mika (Mikasaurus) by SummerRobbins770 August 2, 2010

Mansaurus 

A comprehensive tome of reference and learning on how to be manly. For some, manliness doesn't always come naturally, and the Mansaurus is an essential guide on how to behave in a manly fashion, use manly words spoken in a deep manly voice, and use one's body language to show how manly one is. Many famous manly celebrities allegedly have a copy tucked away including Chuck Norris, Daniel Craig, Russell Crowe, Madonna, Pink, and Fergie from the Black Eyed Peas.

"Daa, I knew I was in love with her da moment I saw her Mansaurus fall out of her manbag as she lifted her leg to fart"
- Sylvester Stallone reflecting on his marriage to Brigitte Nielsen

Mansaurus by aaaaajon January 2, 2012

vanasaurus 

He is sexiest dinosaur of all, female dinosaurs are dying for him

vanasaurus: grrrawr
female dino: grrrawr

vanasaurus by vanasaurus69 January 18, 2021

Muntasaurus 

A munta (ugly female) who is also incredibly large and monstrous the style of a dinosaur

That girl by the bar is a real muntasaurus. She looks like something from the prehistoric era. I’m sure she probably has a lovely personality though.

Muntasaurus by Fat Archeologist December 27, 2009