When the person sucking your dick has gum in their mouth. Sometimes gets stuck on your dick
Ex

Tom:did you get some last night?
David:Yeah, but she gave me cock gum
by Foamywaffles February 13, 2018
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The unsightly, flappy skin on an uncut penis.
Tiffy: I like, totally went down on his cock bubble gum!!
by Pammy Pop ^o^ August 27, 2009
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