1. A gas giant (sometimes also known as a Jovian planet after the planet Jupiter, or giant planet) is a large planet that is not primarily composed of rock or other solid matter.
2. A fat person who farts a lot.
1. Uranus is a gas giant
2. Your mum is a gas giant
by bIMON August 26, 2011
A grossly obese woman who revolves around food and is comprised of a lot of methane.
Teacher:"That Gas Giant assistant of mine rolled over on one my kids and then pulverized his pancaked corpse with a methane blast."
by Rumpelstilzchen February 25, 2009

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