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The action of cleaning up your semen after masturbating at a friends house.
I had cumming courtesy when I cleaned the jizz off of the floor at Jimmy's house.
by BigDickDaddies April 09, 2015
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The common courtesy of reaching your climax , or cumming, at the exact same moment of your partner's climax, out of respect.
Mother: Always practice cumming courtesy, Jimmy.
Jimmy: Why's that?
Mother: To avoid the awkward 10 seconds of watching your partner climax, then having the aftermath of them being angry for you not joining them.
by Duploidzer April 09, 2015
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