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1.
A very loud and prolonged fart that your father did when you were a child.
While I was watching television my father let rip with a dad fart
by Mr Wibble June 13, 2007
 
2.
farts that smell so terrible that toleration is non existent. These farts smell often of rotten eggs and such other materials that are cringed upon. Many kids experienced dad farts when they were children.
dude 1: I think i might be sick, i dont know what i ate, these farts smell disgusting

Dude 2: nah man, you just have a common case of the dad farts.
by supersilicone September 13, 2012