Nathan Grundy

Nathan Grundy is a skilled rocket league player, known for his plays in Bronze 1. His smartness is debatable, but all can agree that he is immature and 4"1

"Nathan Grundy is such a cool dude!"

by alfiesuggy October 20, 2022

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

Grundy

Get active. Or get worked.

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

by skaryb March 19, 2023

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"

by boofhameds August 16, 2025

Grundies

A term used to describe grandma's underwear, maternal underwear or underwear that is largely deemed "unsexy" and "comfortable".

My pregnant wife reached over and picked up a pair of her favorite grundies.

by SGreen5 May 21, 2021

grundy pips

Small pieces of faecal matter found in grubby underpants.

Colin, having terrible flatulence as well as hygiene was not surprised to find that the frequent release of vaporised turd into his pants had formed into grundy pips. A more polite way of saying "I've followed through and lightly shit myself".

by Spoopleman April 16, 2017

Grundy

When you moan about mundane experiences (especially supermarket related) on neighbourhood social media.

My mum loves to Grundy after a trip to the supermarket.

by Grundy April 7, 2020