bonosaursus 

A boner.

Shit! I just got a bonosaursus!

bonosaursus by djaksfjklajfafaf March 10, 2011

bonosaurus 

A dinosaur preferably a brontosaurus with Bono's head on it

EX: Jurassic Park would've been a rockin movie it there were more bonosaurus' in it.

bonosaurus by Iris Byrne December 27, 2007

bonosaurus 

1.Slang term for boner, or erection.
2.What i get when i look at your mom.
3.object obtained when a woman performs the wordho stretch/word.

1. Agh, get yo mutha fuggin bonosaurus out of my face its gonna give me nightmares!

2. Whoa, you see that ho-stretch? That thing's givin me a bonosaurus.

bonosaurus by noodles April 2, 2003

bonosaurus 

A very large "boner" or erection.

"Oh, dude, when I saw that hot chick I got a bonosaurus!"

bonosaurus by Brianna Awesome February 21, 2007