The name nearest piece of material available for wiping off the baby gravy from passionate moments past. This could be a towel, tissue, a sock or even an animals head. We all have potential spunk dusters around us, it is the act of wiping your mess on it which will forever cement that items name as the "Spunk duster"
Guy: Ohhh yeah, that's got it! Here it comes!

Gal: Watch out for my glasses!

Guy: It's safe, it landed in your armpit....

Gal: Ok, pass me the spunk duster...........
by Spunk Dunker January 7, 2011
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When your girlfriend gets spunk all over her knuckles after wanking you off and threatens you in a comical manner with the "spunk knuckle duster".
Girlfriend to boyfriend after wanking him off *she brandishes fist* "I'll punch your face in with my spunk knuckle duster you minger!"
by Freakosaurus April 8, 2011
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