GasTank

Ergh, Jesus christ Gary, shut yer GasTank will ya!
by ShugaDunkerton October 19, 2014
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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 11, 2004
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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 May 17, 2012
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