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"
Noun. Used to describe promiscuous ladies who have slept with half the population of your country, or, if you will, a filthy whore in which to deposit one's spunk. Used by multiple males for the disposal of excess seminal fluids.
"Did you see who Jack got with last night?"
"Yeah, that girl is such a spunk dustbin, she just loves choad."