an act of having sex and not becomming fully aware of the situation until midway through the act.


see also. sleep walking but don't relate the meanings too closely
"that bitch just strattled me in the middle of the night...i wake up, and find her bouncing up and down on my cock"

"omgz dude she sleep fucked the shit out of you"
by HatShapedHat May 03, 2005
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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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The state of and/or feeling of being incredibly groggy after long periods of sleep deprivation or too much sleep.
God, I am totally sleep fucked from last night's marathon dungeons and dragons session. OR

I slept through my whole weekend and now I am completely sleep fucked.
by priortotherewas April 20, 2011
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1: When it's far too hot to be comfortable. 2: When you walk between rooms or into a building and there is a sudden and drastic temperature increase.
Arizona in the summer is hotter than 3 fat people fucking in a sleeping bag.
by Stanton F August 22, 2006
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