To swap the poop grease of one's asshole with the asshole grease of another by scissoring each others o-rings together
"Let's lock these buttholes together and grease swap!". Can also be used as "Let's lock these buttholes together and swap some grease!"
by anonymous April 15, 2025

by lynnknight May 10, 2023

The shit smear left on the back of the toilet seat. Commonly caused by explosive diarrhea or incorrectly positioning your asshole.
"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

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

An oily, malodorous substance found in the folds and cracks of one's butt. Typically found after a hasty wipe and/or following a rigorous workout routine. Similar to butt cheese or duck butter. Could also be a prime ingredient in the making of truffle butter.
Noun: I itched my butt and retrieved a healthy dollop of Rump Grease.
Verb: My girlfriend Rump Greased my driveshaft. I had to take an immediate shower. It itched for a week.
Verb: My girlfriend Rump Greased my driveshaft. I had to take an immediate shower. It itched for a week.
by Doc184 August 8, 2016

A slimy creature that will destroy anything in its path.
A Grease Beast will have a 3ft Penis as well
A Grease Beast will have a 3ft Penis as well
by ChalkedPlay August 26, 2022
