Sex that is so amazing that it seems fantastical, mythical, impossible, or unrealistic; sex that transcends conventional reality and transports the lovers into alternate dimensions; sex that most people do not believe exists, even if it is described to them by one who claims personal experience.
My date was so incredible, we totally had unicorn sex!
or

Yeah, I've been hooking up with different people, but now I really want that unicorn sex, you know?
by M. Svairini March 31, 2010
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the act of shoving ones horn into another ones anus. Then stabbing one in the asscheek after orgasming.
Honey! My pet unicorn can't wait much longer.

But the last time I had unicorn sex I went to the hospital.
by PoPoPoPoPoPoPo October 19, 2008
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When two gay people put strap ons onto their heads like a unicorn and then STICK THAT FUCKIN DILDO INTO EACH OTHER'S ASSES
by Papi Zo June 24, 2017
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Unicorn Sex is the sexual intercourse between a man with a dildo taped to his forehead and a woman who's anal with be penetrated by the same dildo that was taped to the man's forehead
"Hey, John!"
"Yeah Timmy?"
"JUST HAD FREAKIN UNICORN SEX LAST NIGHT!"
"k."
by Khagreytits September 3, 2014
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The female gender slap each other with dildos to have sex with each other
by Obama lover 1 December 17, 2019
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Unicorn-Sex : The practice of being so bemused by the filth that your search engine throws up at the most innocuos queries, that you start looking for things it can`t find.
"Okay, we`ve found monkeys shagging in your granny`s refridgerator, type in unicorn sex!"
by Anonymous November 10, 2003
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During a threesome, the balls of a fully erect male cover the eyes of 1 member while giving a blowjob to the third member.
“...Blind unicorn sex was great, I had my eyes covered by balls most of the time while I was giving a blowjob
by Tiddlydinkydoo April 25, 2018
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