The chair a man sits in while masturbating to internet porn. Easily identified by the semen stains on the chair.
Mike: What's the deal with this chair Chuck? You spill a bunch of toothpaste on it?
Chuck: No, that's my grease chair. Bangbros just got some new vids up and I had a good tossing session.
Mike: Nice! That explains the tissues all over.
Chuck: No, that's my grease chair. Bangbros just got some new vids up and I had a good tossing session.
Mike: Nice! That explains the tissues all over.
by Joel E. February 21, 2009

by gangman grease February 22, 2021

When you fuck a ass hole and dump a big load in it and you keep on fucking till it come back out of her or his ass
by Mad12 November 10, 2018

by BEN2k4389 June 18, 2008

The sweet super slick lube commonly found between the most upper inner thigh and scrotum of larger men during excess friction Can be accompanied by a foul or unclean genital odor.
by Pawpaw is the best January 22, 2019

by Gud_Intenshunz April 16, 2008

The shit smear left on the back of the toilet seat. Commonly caused by explosive diarrhea or incorrectly positioning your asshole on the back of the toilet.
"At last year's company holiday party I got so drunk I accidentally left a grease shingle."
"I took this girl home from the bar last night, when I woke up she was gone...but the skank left me a grease shingle as a parting gift." #greaseshingle
Donald Trump's hair looks like a grease shingle.
Yo bro, quit being such a grease shingle.
"I took this girl home from the bar last night, when I woke up she was gone...but the skank left me a grease shingle as a parting gift." #greaseshingle
Donald Trump's hair looks like a grease shingle.
Yo bro, quit being such a grease shingle.
by M&TfromtheDeli June 28, 2016
