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1.
When you bite some ones ball sack while the are cumming and the blood gets mixed with cum.
I scruffed some old guy for two dollars
by Fiddle Boy November 16, 2003
 
2.
Used to describe someone who is not only scruffy but also a scrubber, a real dirty low life from the wrong side of town.
Did you you see that tramp spit all over the place
Yeah he was a real Scruffer
by cescisgod2010 February 04, 2010