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1.
When packed in a car en route to post-collegiate spring break, your carmate's burps fill the car with an odor so pungent, that it smells as if a fart and barf had combined resulting in the perfect storm of stankiness.
Damn Eric, stop fart barfing, or im going to dive out of this moving car and run backwards naked through the desert.
by Teresa 4G March 12, 2008
 
2.
It is when you fart out barf from when someone threw up inside your anal cavity while really tossing your salad deeply.
Linda threw up while tossing my salad, which caused me to fartbarf all over her face.
by Sinbadass December 10, 2011