dinosaur egg 

The presentation of a single testicle flipped up over the under garment's elastic waistband or otherwise trouser material waistband; resembles the leathery egg shell of the early offspring of a dinosaur

I thought it would be funny to show my friends what a dinosaur egg was, so I tucked a ball over my pants and used my shirt as a curtain to unveil the travesty.

dinosaur egg by diffferentia August 23, 2009

Dinosaur Egg 

The act of fisting a woman in the ass, then trying to open your hand up, while said hand is still inserted.

"Debbie could do nothing but scream when I successfully pulled off a Dinosaur Egg."

Dinosaur Egg by PEM February 7, 2005

that oatmeal with the dinosaur eggs 

Papyrus’s (a character from the hit indie game UNDERTALE) favorite food. Commonly confused with spaghetti.

What? Papyrus’s favorite food? It’s that oatmeal with the dinosaur eggs, idiot. … Hey, why am I the only one that knows the answer to this stupid question?
-Flowey on Undertale Q&A

that oatmeal with the dinosaur eggs by a dumb donkey August 16, 2021

oatmeal dinosaur eggs 

a term to describe one man's balls.

boy: "check out my balls. they're so oatmeal dinosaur eggs."

oatmeal dinosaur eggs by JENYsmdCRAIG January 22, 2010