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2.
Similar to the Dirty Sanchez, except the poo is wiped on the victim's face in the pattern of Dustin Diamond's facial hair.
Dude, I didn't know you grew a beard.

I didn't I just got a Dirty Screech!
by PilotMikeTx October 01, 2006
 
1.
Pretty much the same thing as the Dirty Sanchez but renamed in honor of the new Dustin Diamond sex tape
In "Saved by the Smell", 2 girls get a Dirty Screech
by Dompap September 29, 2006