Definitions by inbred.

Y.S.G.D.F.S. 

You're So God Damn Freakin' Stupid.
doesn't have a pronounciation, as usually doesn't need to be sped. Most commonly refers to sped people.

danoz the sped girl: If i had two cheeses and i turned 18....highlighters?
lara: go home.... *YSGDFS*

Y.S.G.D.F.S. by inbred. September 22, 2004