Top Definition
When a member of the Dupes clan blasts your face and you suffer a mysterious rash on or around your mouth consisting of puffiness, redness, and general rashing of the skin where the penis contacted the skin.
Twin 1: Michelle, it really looks like your Dupes Dong Rash is clearing up.

Twin 2: Thank you, I really took a serious cum bomb last night.
by David Plante January 01, 2008

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