Cambridge Dictionary defines "thwarting" as the action of a gay male putting his testicles into a another gay male's anus and deliberately attempting to catch HIV; or, when a gay male puts his entire mouth, teeth and all, into the anus, to eat out the HIV.

In the case of gay thwart sex incest, it is combined with convential homosexual fornication, between blood-related family members.

This is a fact, according to Yahoo Answers user Billie - a general practitioner of 38 years.
Normal person - You're ugly.

Gay person - FUCK YOU. Try do what you want, i will fucking gay thwart sex incest you
by Curryshak2 October 17, 2013
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Friendship Incest Syndrome is an occurrence where you have a group of friends who have all dated and broken up with the same people, then you are eventually forced to be friends with an ex because they're still in your circle of friends - in fact they're probably dating one of your friends by now. It effects a small # of people, likely living in Southern California. It extends to Frenemies who have removed themselves from the circle whom you can never fully get away from.
I'm going to a concert tonight, oh jeez, Robin & Joe are going to be there...Friendship Incest Syndrome (FIS).
by Ms. Woods July 3, 2010
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Brent Austin Miller (terrorist) from Lytton, Iowa fucked tiffany johnson also from Lytton Iowa when she was 13 and he was 18 and then again when he was 19 and then he took his sister to her senior prom and tried to get laid........he succeeded he also has a gay ass jewfro and a small dick that didnt please tiffany or his sister.
brent is a pedophile and incest loving jewish bitch doesnt add up to nick's fingers
by chandlerjepsen11 April 28, 2012
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Having to do with the word incest. "Incestful" is street slang for nasty cousins who are trying to be together, or trying to be more then cousins.
Kaleah and Sam are incestful
by Flabbyjackers January 12, 2017
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Acausal incest is, acausal (basically metaphysical), multi-dimensional sexual intercourse between two relatives not simultaneously existing in one reality.
Veronika: i'd fuck my nonexistent brother in the acausal
Dzheyms: that's acausal incest bro
by Sinistrous Rape 333 June 17, 2020
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basically when people who were raised as siblings and/or family start a romantic relationship. Ex: Any of the "Kissing Booth" movies.
The relationship between those kids is basically moral incest, they were raised like siblings! Gross..
by Grabagababadussy January 6, 2022
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