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
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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 24, 2013
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The act of telling someone that an early access code that is not available.
i.e “Hey Rick, I don’t have an early access code. I think you have been grundied!”
by tacoinhell January 23, 2023
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The act of telling someone that an early access code is available, when it is not.
“Hey Rick, I don’t have a code. I think you have been grundied!”
by tacoinhell January 23, 2023
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A terse retort. A short sharp response to someone who is struggling to contain themselves and is pushing their insecurities outwards onto everyone else. A 'grundy response' should only be used with people who you have a baseline friendship and / or respect with as they are often quite harsh and may include profanity.

The term can also be used in a derogatory fashion when referring to anytime you responded negatively to someone who is asking you to do something (haha I gave him a grundy response)
At a relaxed social gathering at Tommy's house people are preparing for a large scale group dinner. Tommy is stressed because he wants everything to be perfect, as a result he is pushing his stress outwards onto everyone else. Jim is making gravy for the above mentioned dinner:

Tommy: Jim is the gravy ready?
Jim: Not yet, I'm working on it, just need a little more time to make it good enough.
(30 seconds later)
Tommy: Jim, the gravy, is it ready? What's happening!?
Jim: I'm working on it, I want to do a good job, it should be ready soon.
(10 seconds later)
Tommy: Look, Jim, the consensus is that we don't care how good the gravy is.
Jim: Well, the consensus can go fuck itself Tommy <- Grundy response

At first look the Grundy response seems harsh, but in reality Jim is aware of how relaxed the situation is and that Tommy is just running around talking a lot but getting very little done other than stressing people out. The grundy response is used to snap him back into the reality of the situation.
by slackjawedfrigate April 25, 2013
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A very small smart sexy man. Looks like dumbledore. Faps with his mum and his rabbits every night. He loves maths and milfs.
He is so sexy, he is such a luke grundy
by Bert69 June 11, 2022
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n. 1. Members of the Grundie Gang

n. 2. A pair of grandma underwear

The Grundie Gang is an electronic commune of like minded people who promote self love. The members of the Grundie Gang are known as "Grundies." Their logo is a pair of cotton "grandma" underwear because Grundies believe comfort is fashion and natural (non-synthetic) materials matter.

The Grundies started as American Twitch streamer, and musician, ReinaMystique's community name. Grundies enjoy good music, food, art, and culture.

The Grundies have a Discord and use the hashtag #grundiegang on all social media platforms.
I love hanging with the Grundies. They always have positive vibes.
by ReinbowBrite November 22, 2021
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