When a man is fucking a girl either in the vagina, or in the anus, and tears through the skin separating the two. His penis is then in both of her orifices, and she is probably bleeding and screaming. Space docking can be accomplished either by entering the vagina, tearing through and exiting the anus. Or by entering the anus, tearing through, and exiting the vagina.
Guy1: Damn man, last night Suzy and I were fucking and she was laying on her stomach, and I was sitting on top of her facing away from her head, fucking her in the ass. And I fuckin pushed in hard, and next thing you know I pushed out of her fucking vagina!

Guy2: Either you have fucking Cheshire cat dick, or you space docked the shit out of her! Her pussy is gonna need some serious stitches. Sounds like your life is going to suck for a while. Have fun with your blue balls.

Guy1: Hey man. Whoa. Her pussy is busted. Not her mouth.
by Harzz March 4, 2012
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Two objects namely one uncircumcised penis, and one other penis gently come together into a tip to tip union. once touching, the uncircumcised male then proceeds to encapsulate the other mans shaft creating a perfect vacuum seal.
Me and my jew bro went space docking last night... i was stuck for hours.
by Tates726 February 24, 2013
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When a man shits into a womans vagina.
Brian squatted over her, lined it up, and began space docking.
by GarethLJ April 3, 2006
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the once common, now lost art of pooping into a girl's vagina, space docking is enjoying a resurgence of popularity, particularly in the midwestern and northeastern United States (most notably Chicago and New York City) that reminds many art historians/scatologists of the beginning of the renaissance that began in Italy in the 15th Century.
Sally didn't much appreciate Charlie's failure to disclose that he ate three bowls of chili before space docking with her last night.
by The Whaler March 15, 2006
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The act of defecating directly into one's vagina. Like a space ship attempting to dock to a space station, "space docking" involves very accurate control and near-perfect alignment of the two orifices.
"Hey baby, want to try space docking tonight?"
by cyberpimp April 2, 2006
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When a man with a erect uncircumcised penis extends his foreskin over the tip of another erect penis (circumcised or non).
Bobby: We were touching tips and then he started space docking me
Andre: Ooooooh that's hot.
by JohnsonNoJ March 6, 2014
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