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Shock or astonishment in the event of sudden premature ejaculation, which can be experienced by both males and females.
1. Dude, last night at the club I was grinding too hard with this chick and I got totally cum stunned.

2. OMG Darlene, last night at the club this total scrub loser was trying to grind on me when he came in his pants. I was so cum stunned.

3. Daaaaamn, look at Jenny. She’s fucking cum stunning, man.
by TacomaBeags March 08, 2011
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