Top Definition
Bum-Gas means fart or a lady that has to much booty.
1. Mann that lady really has a Bum-Gas, Don't you think ?
2. Eww go to the washroom to let your Bum-Gas know one
wants to hear it or smell it.
#booty #fat ass #bum #butt #fart #pass gas
by Brenda Hammah April 30, 2008
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