Incest (A.K.A. Wincest) is a perfectly normal, acceptable and natural act in which two people who are thoroughly related have sexual intercourse. This usually results in children who are very ugly and/or stupid, and in turn, fail at life. Such traits only appear on the first generation and if you have a whole bunch of incest babies then the ones with the defects will die off and it will weed out bad recessive genes and it results in genetically healthier offspring. But this only works if you have a lot, so if you do incest, have as many inborn babies as you can. Incest is one of the key tenets of /b/sexuality (i.e. one of the few things that can make a jaded /b/tard horny after being exposed to so much abstract pr0n), along with rape, pedophilia and gore.
by desu² May 23, 2011
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Dude i totally you totally just wincest with your sister.
by SeeJayy1 December 13, 2010
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Combining the words win and incest
It's pretty much incest (love between siblings) but wincest is when it's a win sometimes relating to sex but not all the time usually it's when your ship or otp are sibling and the end up together and your just over her like "YESS MY OTP, MY SHIP THE SHIP HAS DOCKED SOOOO MUCH INCEST BUF ITS SUCH A WIN IYS WINCEST!!!!!!"
Yaayyyy my ship is together it's a win! Wait but the siblings... So it's incest? Wait! ITS WINCEST!!!!
by Shion-chan February 2, 2015
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Something inappropriate or wrong. But still ok in some cases. It is something that is totally bananas .
Person 1: What is incest?
Person 2: Incest is wincest
Person 3: Nice
Person 2: Okay then
by No body in particular November 24, 2019
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A ship in the supernatural fandom that involves Sam and Dean Winchester who are, by the way, BROTHERS and so most of the fandom rejects it as an option and instead resort to shipping Destiel, a ship between Dean and and Angel named cas, and Sabriel, the ship between Sam and an archangel named Gabriel. Thank you for coming to my TedTalk and remember.... Wincest is Incest
Fan 1 - I ship Wincest

Fan 2 - NO THAT IS ABSOLUTELY NOT OK THAT IS ILLEGAL THEY ARE BROTHERS AND IF YOU BELIVE THAT THEN YOU CAN GO STRAIT TO THE EMPTY BECAUSE EVEN THE DEVIL HIMSELF WOULD NOT LET YOU INTO HELL FOR BELIVEING THAT DESPITE THE FACT THAT HE IS IN LOVE WITH HIS BROTHER MICHAEL. HOWEVER MICHIFER IS DIFFERENT BECAUSE IT WOULD BE THE AU MICHAEL WHO IS TECHNICALLY NOT RELATED TO OG LUCIFER. SO YEAH!!!😈😈😍😍😍
by LuciferRulesMyHeart April 16, 2019
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A phrase many anime fans use to describe/praise an anime/manga depicting incestuous relationship(s), usually between or among siblings.
"I just can't stand anime, man. Why is there so much incest in it?

"Bro, incest is wincest!"
by Yume99 March 6, 2016
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Usually used when you get controll of your sister/brother and convince them to have sexual intercourse and you are proud so you tell everyone that you did it.
Guy: Incest is wincest
Friend:Holly shit! Good job m8!
by TKMachine June 8, 2017
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