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the euphoric feeling, or high, that is felt upon completion of satisfying sex. a state of being where a person may say or do retarded things as if they were actually stoned, do to the awesome nature of having busted a nut.
I must've been on a cum high when I was negotiating with that hooker because I agreed to pay her extra for swallowing.

I had such a cum high from masturbating that I completely passed out with my pants around my ankles.
by cre-pac September 10, 2010
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