When a broad is so repulsive and so ghastly as to appear to the viewer as a Dog Faced Gremlin. This is especially true if she drives a Dodge Neon. Commonly abbreviated using its acronym, D.F.G.
After throwing up in an Osborne's parking lot "Hey dude, did you drink too much tonight?" "Nah man, I just caught a glimpse of the DFG!"
by Pize October 13, 2004
by ryantorgerson November 12, 2009