Top Definition
when riding bart (bay area rapid transit) and you release a nasty fart and watch the rest of the train slowly move away from you in disgust.
Sally: Whats that smell?

Johnny: it must of been a bart fart
by cdeezybz September 23, 2009
5 Words related to bart fart
fat kid w/ no dick and likes to finger his asshole..also..has pickle tits and jerks off to gay porn of jc's computer w/ his smerl cerk and lil' load
Bartfart is grounded for slamming his sister.
by dink March 28, 2003

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