Top Definition
When you fart and it smells like the fast food you ate earlier.
Man, I had Wendy's chicken nuggets for lunch today and I had a fast food fart.
by kelly girl January 27, 2009
When you're eating food from a fast food restaurant and you fart, it has that distinct smell that smells awefully like the inside of the restaurant.
My sister was eating food from McDonald's and she had a fast food fart. It smelled just like the restaurant.
by monkeymanta November 30, 2008
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