Buttshank 

(noun, adverb) The act of or actual splash of cold toilet water splashing onto one's bare ass caused by the poop plummeting into the water basin and displacing the water below.

WOW. My ass is really wet from that buttshank.
(insult) You buttshank, go dry your ass.

Buttshank by C-troubalicious February 12, 2006

buttshank 

Another word for anal sex

yo, i heard that jake got buttshanked last night, is that true?

yeah its true, it was me who banged him!

yolo right?

yolo

buttshank by Johnny Cracker 2.0 April 6, 2015

Buttsharking

The act of kissing ass.

Man did you see Bob buttsharking the new Boss.

Buttsharking by Bubbacheese October 10, 2005

Buttshawty 

Someone with a big booty

Damn she’s Buttshawty look at her big butt

Buttshawty by Natedawg248 December 30, 2019

vestigial buttsack 

When a person is born with the parts to form a butt (butt cheeks) but no flesh ever properly forms in it, so that the prson doesn't have the natural roundness of a butt and are therefore forced to sit on the extension of their thighs for lack of a natural butt. Or in simpler terms- lack of butt meat.

Hold on, is that Crystals's thighs or just her vestigial buttsack that's creeping from the top of her jeans when she bends over?

vestigial buttsack by Zoraya M May 19, 2008

buttstonked 

Being so twistedly fucked up (extremely inebriated in some form) that you literally can not and do not want to do anything.

X: Dude, that party was intensity in ten cities!

Y: Totally so dude, let's roast these righteous herbs and get thoroughly buttstonked to celebrate!

buttstonked by KyleFromTheAmandaShow March 24, 2014

peeing your buttsack 

When someone has taken a pee and it has overflowed the buttsack.

Hey man, quit peeing your buttsack!

peeing your buttsack by The real mike jones November 14, 2014