beefy triceratops 

The sexual act of a man shoving not only his penis but his two testicles inside some opening of a woman's body.
The penis plus the balls make up the "triceratops".

I wrecked her with my beefy triceratops!!! So much beef, such little room. It took force.

beefy triceratops by Darth Mader69 April 24, 2011

Beefy Triceritops 

the sexual act of inserting not only ones penis, but also both of one's testicles into a vagina
thus the beefy
and the three makes the triceratops

I went totally Beefy Triceritops on that Ho!

Beefy Triceritops by Beef Master 69 69 April 17, 2011