Definitions by the 2355

natural gas exchange 

when to people put there assholes together then one farts. the fart then proceeds to enter the other persons asshole. from there the person farts out the original fart. (makes a sound "pooof fffooop pooof")

baby im going to sascuribe to the natural gas exchange with you.

natural gas exchange by the 2355 September 5, 2010