Grundy 

A man with a plan to give you a C! He is most well known for his war crimes during the Vietnam War Era.

He did a Grundy during World War II, what treachery!

Grundy by NotShortMan February 9, 2021

Grundy 

Aimlessly wandering through life as if you have no purpose. Strong lack of focus and attention.

I was going to wake up early and just attack life but instead I just kind of feel grundy instead. I grundied my test today and failed miserably.

Grundy by bscho23 February 22, 2022

Grundy 

Get active. Or get worked.

"Get GRUNDY"
--"You just got grundified"

Grundy by skaryb March 19, 2023

Grundy 

a cougar vagina …

archie wants that grundy mmmm grundy

Grundy by msgrundy July 24, 2025

Grundy 

To be fried as fuck off that boof cart, or lords lettuce

"bro I'm grundy as fuck right now"
"bugga I'm grundy"

Grundy by boofhameds August 16, 2025

[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!!

[Grundy] by SMOKINGMAN March 13, 2009

Grundy Run 

A tradition seen in New Zealand high schools where at the end of the year, students strip down to their underwear and run across their school grounds (or another school)

Person 1 - "Did you hear? Steve went to the grundy run yesterday!"

Person 2 - "No shit Sherlock, like two thirds of the school went."

Grundy Run by jencii May 4, 2020