-noun
1. a short fat person; a person who is wider than they are tall.
2. Slang. a penis that is wider than it is long.
Did you see that chick Jeff brought home last night? That bitch was a grundy.

Wow that guy is an asshole. Its OK - he's probably just pissed about his grundy.
by flikle September 5, 2009
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Really gross underwear, usually worn by fat, middle-aged men.
i.e. y-fronts and a stained vest are grundies.
'Ewww, I can see Mr Francis in his grundies through the window Mom!'
by Rileyrileyriley May 4, 2009
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Also known as Grundyism. A term to refer to anything, usually from the 1970s that is stale, dingy, dilapidated, and often came in horrible shades of yellow or brown (The actual colours of Urine and Faeces), imitation wood and plastic and came in the forms of hexagon-ish shapes. This term is named after the Grundy TV logo seen in the opening credits of Sons and Daughters for obvious reasons.
The state of that dilapidated, Grundy looking caravan, it deserves burning.
by DirtyHitmanHartley June 10, 2011
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Slang term for a vagina, pussy.
I'd like a bit of her grundy!

She's got a nice grundy!

Wouldnt mind fucking her grundy
by Billy_-69- May 26, 2008
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Slang term for an erection.

Originated from the Archie comics character Ms. Grundy who was loved (one way or another) by everyone.
Example 1:
"While slow dancing with Betty, Jughead got a huge grundy."

Example 2:
"Megan Foxxx could give any straight guy a raging grundy."
by Sauceboots April 23, 2010
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A person who likes aspects of emo / goth things but isn’t quite a full goth, they like soft grunge and usually wear have quite a dark style but not too dark I.e fish net tight, black doc martins and band shirts, they will also, most definitely paint their nails black or at least really want to. They listen to a lot of pop-punk and bands like MCR and 5sos
She’s such a Grundy, She never takes those headphones out!!!
by Chenille June 20, 2019
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A person who is everyone’s gay best friend and known for having the smallest dick in the group. Someone who you can talk to but you just know that whatever you tell them will be bait for them to slag you off with others.
“Oh, I have never had a gay best friend with a smaller dick than me!”
“You haven’t? Just become friends with Grundy”
by Xx_Sparkle_xX December 11, 2020
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