Gastank

To urinate in a persons rectal cavity. Can be followed by "siphoning" in which a hoselike object is used to siphon out the urine.

After John gastanked Jill, he proceded to siphon out the urine with a straw.

by Kyle J. November 10, 2004

GasTank

A reference to one's bottom

Ergh, Jesus christ Gary, shut yer GasTank will ya!

by ShugaDunkerton October 19, 2014

Gastank

You are stuck in a gastank when someone cuts a fart in an enclosed area, like a car or an elevator.

The drive to the beach sucked because Hugh had some serious beer farts and it was raining. I couldn't open my window and my eyes were watering in that gastank.

by Omphalos October 26, 2012

Gastonk

Gastonk is the ship name of the best gay couple of this modern day. These two robust and beautiful guys make the perfect couple when referring to perfect and picturesque partners.

The couple consists of Kronk from ‘The Emperor’s New Groove’ and Gaston from ‘Beauty And The Beast’

Omg Gastonk is my most favourite gay power couple of this decade!

by Groovy Tunes April 30, 2020

Sugar in the gas tank

Having effeminate mannerisms or being a closeted homosexual.

Is he gay? Well, I think he has some sugar in the gas tank.

by beepbopboop2 May 19, 2021

Filling The Gas Tank

Filling the gas tank is when you stick your dick into someone's ass (male or female) and proceed to piss.

Cade: I got laid last night.
Owen: Yeah right, by who?
Cade: Bronwynn let me try Filling the gas tank
Owen: 🅱oi

by Loaf of Beans June 15, 2018

Gastalk

A noun used to describe statements made while on a gaseous, psychoactive substance such as marijuana. First used in Ice Age 3: Dawn of the Dinosaurs (2009).

*After coming down from inhaling a gaseous psychoactive substance*
Crash: "You wet my bed?"
Eddie: "That was gastalk, dude!"

by thegastalker June 8, 2022