When you slip you thumb into a stripers vagina while putting a note between her legs. Will usually get you kicked out of the strip club.
I gave that skank the dirty thumb.
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Lubricating the thumb and rubbing the bare anus counter clockwise while preforming cunnilingis or felatias. Lubricant can vary with surroundings.
Ladies love the dirty thumbing.
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When you finger a girl with your thumb
And she scream Ching Chong your dog is gong
Ah yes I gave her dirty thumb
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