Grundig 

Noun. A smelly fart. Named after the electrical goods manufacturer for its comically anal name.

Mike cleared the room with his grundig. It smelt like something had crawled up his arse and died.

Grundig by d40a5c January 13, 2008

Grundig 

a word to describe a person who is scared to ask people awkward questions, likes it kinky, usually is pretty hilarious, likes it when people jack off and is just a pretty cool person.

woah!, this person was such a grundig when he asked me if i have ever jacked off in a kitchen!

Grundig by lalalalalalalalla September 7, 2007

reg grundies 

Australian slang for underpants.

Dont forget ya Reg Grundies mate.

reg grundies by Matoman February 18, 2017

grudigasm 

Being raped by someone that has a unibrow.

OMG! Last night, Chewbacca tied me up and gave me the biggest grudigasm! Now I think I might have a grudancy!

grudigasm by Anonymous11125487 April 26, 2008

Grundiocity 

(n.) something lacking emotion (i.e. grundious); something displaying temporary moroseness, esp. a period of time

This utterly bland week has been nothing but one grundiocity after another.

Grundiocity by Mateseco December 3, 2009

Grandiginous oof 

The epiphany of having committed an, oof (a failure) in any given situation.

Jared: “bro, I’m so sorry but I just dropped your blunt and now it’s fucked.”
Tom: “are you kidding me!? Bro that’s a grandiginous oof.”

Grandiginous oof by Big Tom December 24, 2018

grundies 

(Australian): Underpants.

Derives from Sydney Rhyming slang, "Reg Grundies = Undies", which is a reference to that excellent Australian TV production outfit Reg Grundy, behind such televisual classics as Neighbours, Home and Away, The Sullivans, etc.

From "The 12th Man Again", wherein commentator Max "Tangles" Walker discusses the perils of prolonged bouts of commentating on international cricket competitions:

"when you're sitting around in the commentary box for this length of time, it's not unusual, really, for the old cods to maybe nod off, get a bit numb; I think the best thing to do in situations like this is to get up, stretch the old legs; maybe even try to casually slip the old hand down and, maybe, give them a bit of a rub; probably try and adjust the old reg grundies while you're down there; try and loosen them up a bit. Anything, really, to try to get the old circulation going again."

grundies by Blind Electric Ray May 3, 2005