Top Definition
The coolest guy on the whole fucking universe. He is so awesome that Chuck Norris makes Gassan jokes. His swag levels are over 9000! He's pretty much a big deal where ever you go, even if its not on Earth. He has some haters, but they have nothing on him. He makes the Hulk look like a fucking pussy.
Man that guy is so awesome. His name must be Gassan!
by GasmonH August 20, 2012
1. To be extremley perverted.
2. To disregard females.
Matt is being such a gassan today.
by George Gorringe May 03, 2005
1337 fagz0r who sux0rz the buttz0rz
"I am gassan...haha"
by Advil April 04, 2004
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