[Grundy]

Way back in the 60's it was a common phrase used for an erection. It was used in reference to the teacher on the Archie cartoon series, Miss Grundy. If your penis was Really hard, it was called a "Grundy" because it pulled so hard on your skin that the leaders(tendons) in your neck showed like the teacher on the Archie cartoons.

That hot chick over there in the string bikini is giving me a Grundy!!

by SMOKINGMAN March 13, 2009

Grundy Thundy

When you bang a fat chick and your scrotom slaps against her thighs with a furious bang.

Will was going so ham on Mrs. Vincent that the Grundy Thundy could be heard from miles away.

by Gooch master December 23, 2013

Little Miss Grumpy Pants

The worst of the bar staff. How can anybody hold a grudge for so long over a fucking Christmas card?

Little Miss Grumpy Pants is a loser, despite the cheap blowjobs

by Pete January 25, 2005

bust a grumpy

having an orgasm, especially when one has an angry-looking o-face

After getting 20 minutes of head, he would bust a grumpy all over her face

by kkit January 13, 2010

Grunyon

A Pack of Eagleyphortes

My grunyon got attacked by my fleebarb.

by Spooleymcham November 21, 2004

grunty

me ,i am the almighty grunty of the modified car scene

yo yo yo grunty's here make way for the grunty

by grunty February 15, 2004

grundy

Thought to originate from Michael Grundy,the coolest cat to ever walk the earth, meaning sublime and the most ultimate form of cool one can find

man, he sure can dance grundy!

by MG September 25, 2003