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1.
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
 
2.
one who resembles a gremlin; with the face of a dog
mikey p, you's a dogfacedgremlin!!
by ryantorgerson November 12, 2009