Grinderman 

a "grinderman" is a man with great sexual power. the word probably refers to the act of "grinding", a metaphor for the sexual act.
It appears in many blues songs, where the bluesman calls himself a "grinder" or a "grinderman"

i'm the grinderman girl

Grinderman by junzi February 23, 2009

genderman 

Genderman is a nickname given to the streamer Ranboo by lgbtq+ people who experience severe gender envy for the said streamer.
It is a combination of the word "gender" and "enderman".

Person in chat: Hey genderman, spare some gender ? Please ?
Ranboo: No, it is all mine and I am keeping it.

genderman by Eenie_beany_miney April 27, 2021

genderman 

literally just ranboo

cissy:hey hve u seen ranboos stream
random person:yes he gives me severe gender envy he's the best genderman
cissy:

genderman by gay enby May 23, 2021

Gingerman 

A divine and mystical creature of incredible rarity; appears in the form of a thin pale skinned man with glasses and fiery red ginger hair and beard; can be attributed the importance and religious standing of a god. He is all powerful and the cause of all things mysterious.

Ermagerd it’s the Gingerman!
You cannot defy the Gingerman.
You do not find the Gingerman, he finds you.

Gingerman by Aramere3650 April 4, 2019

grindsman 

jamaican slang for one who displays great prowess in bed.

Girl "Winston and I spent the last night together.He is a real grindsman"

grindsman by Matthew D Moon August 8, 2006

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