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 7, 2010
Get the Friendship Incest Syndrome (FIS)mug. 
Get the incest is the best put your sister to the testmug. 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.
by chandlerjepsen11 September 30, 2012
Get the brent is a pedophile and incest loving jewish bitchmug. You forgot the incest, shitstain! It's the most important part! Sex is only good if it's your sister kind of!
Hym "Yeah it's like a cannibal suffering cult that is, like, super stoked about how they murdered an innocent guy without remorse... But it ALSO... Has INCEST! It's the most important part! The incest IS the religion! The whole goal of the religious is to perform that sweet, sweet incest ritual! And it's super important to them that people are forced to do it! They really want you to make a chick your sister (technically) and then fuck a baby into your kind-of sister. They're also the gimps for the Jews! And the jews are functionally equivalent to a Jesus. That's a thing too."
by Hym Iam February 27, 2024
Get the Incestmug. 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 5, 2022
Get the Moral Incestmug. by Hanna Gemosuat August 14, 2022
Get the Incestmug. by Nugget tell July 16, 2021
Get the Incestmug.