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The act of having sex while one of the partners is sleeping. If the partner who is not awake orgasms they will believe it is just a wet dream.
Mary was not happy when she orgasmed believing it was a wet dream when it was really a sleepfuck with John. She is now expecting a child.
by Fletcher Boys January 13, 2007
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When a girl is asleep and the guy comes to sneak to her house. The guy fucks her in her sleep inwhich the girl feels absolutely nothing because she believes it's all a dream.
"Mahn where we're you last night?"
"oo i was sleep fuckin this girl. best night ever!"
by supergirl12345 April 14, 2008
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