(Noun) Term coined in Houston Texas at the winter weekend BBQ. When about to engage in coitus with a Thai lady boy you reach down and slowly slide your finger into an inside out urethra. You then wipe your hands on a dirty rag
by DDC ATL November 11, 2017
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Something one does to get elected captain of a high school cross country team. The act is very naughty and obscene. The person who puts it in the gas tank usually denies the allegation or asks what it "puts it in the gas tank" even means.
by Pen Bennington February 15, 2010
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Dan: L0L. dat nigga has that GTP. all day, for life.
Desmond: GTP?!?
Dan + Joe: GAS TANK PENIS
Dan: L0L. dat nigga has that GTP. all day, for life.
Desmond: GTP?!?
Dan + Joe: GAS TANK PENIS
by Bethekingdom April 23, 2011
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Get the Fill the gas tank mug.by Jenken95 May 29, 2009
Get the Gastano mug.The act of a women giving oral sex, but instead of spitting or swallowing she just lets her moth fill up with the mans cum.
by mister moosecock October 23, 2011
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