Granderpants 

An unattractive, old fashioned and often huge style of underpants/breifs, worn by pensioners and people with appalling fashion sense.

Often spotted covering large asses, where the lining of the granderpants are visible through pants/jeans and exposed to the unfortunate public. Also commonly spotted on people with grotesque and fat behinds.

As Jim walked down the street he noticed a fat old lady wearing a gross flowery dress with her huge pantie line clearly visible underneath. A gust of wind blew up her dress further exposing her brown huge underwear, that was struggling to contain her huge, fat and saggy ass. It was then Jim knew he had spotted a pair of granderpants.

Granderpants by Dark Owl July 13, 2009

Grunderpants 

Underwear soiled with fecal matter, having skid marks or filthy from bodily fluids such as semen, urine, vaginal secretions or ass sweat.

I just sharted. I’m gonna have to walk around with grunderpants all day.

She pulled her panties over my face. While expecting a fragrant experience, I got grunderpants and a big skid right across my nose.

I sniffed her grunderpants and it was a whiff of stank ass booty juice.

Grunderpants by Eaton Holgoode June 1, 2018

Grandpants

An old man who fought the Japs in WWII and sends you $100 dollar checks which signify the approximate amount of love directed at you. Carries the name "Grandpants" due to the high position of the Sears Docker Elastic pants he wears above his hip bones. He also loves Spaghetti and Meatballs at Dinos, hates awkwardness and negroes. Favorite phrase is "Ehh your a good kid Brendan, I live next store to the niggers."

Synonyms: (Crampon, Pants-Pants, Grandpon, Uhhh Mary)

Grandpants called, he said we have to go to the holy immaculate feast of St. Anthony's for clams and buttered shit.

Grandpants by Gauchacj November 21, 2011

Gunderpants 

adj; a word to describe someone who is relentlessly annoying

I can't with her, she is such a gunderpants.

Gunderpants by theargyledaisy September 21, 2018

Tweeky Mc.Gunderpants 

a methamphetamine induced state of heightened paranoia

Oh no, Tweeky Mc.Gunderpants is bouncing from the peep hole, to the window and back again!

Tweeky Mc.Gunderpants by KandiQueen February 24, 2021