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The way people lean up against their cars when pumping gas,sometimes followed by a cigaretteFor the hard asses,Or just watching your gas pump
Look at the way he smokes whiles he leans on his car to pump his gas he must like to live dangerously i wish i was cool enough to do the Gas-o-Lean
by RVCA210 October 25, 2009
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The art of smoking gas and doing lean (gas-o-lean) at the same time.
Person A - Yo, i got destroyed off that gasolean last night!

"Yeah I'm on that gas, yeah I'm on that lean, mix it all together and we call it gasolean" - 2Chainz
by Hubble77 January 25, 2016
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