Definitions by Doug Hurlburt

Grendel 

1. A giant beast that lives in a lake with his mother in the epic poem Beowulf 2. A giant beast that lives in the pants of a male human (if you catch my drift)

Go suck on a grendel!
Dude, he has a nine inch grendel.

Grendel by Doug Hurlburt October 6, 2005