Incestia

When a two or more autistic members of the family do sexual things.

Damn, The Invertia family is being incestia again

by Not tritron August 19, 2017

Incestion

When one member of your family wants you to have sex with another member of your family.

"I want my sister to fuck my dad!"
-"Whoa, Incestion!"

by Marxe August 26, 2013

incestion

When doing 69 with an exact replica of oneself, the person is giving pleasure to themself while reciving pleasure from themself, thus creating a split in the universe

-I saw a guy 69ing with his clone

-Are you crazy? I heard incestion was impossible!

by orangekiwicoconut September 28, 2011

Incesting

The act of a family member totally making moves on another family member.

Adrianna: "So my cousin messaged me on Facebook, and he was all like, 'hey baby, good morning, i love you' and I got scared cuz I thought he was incesting me up so I signed out. Then I realized that his fiance has the same name as me."
Brandon: "lol awkward"

by zombiedinosaurseatyou February 19, 2011

incestbians

Twins that fuck each other

Those twins fuck each other; they’re incestbians

by bexx9 November 29, 2021

incestbians

Sisters that fuck each other

Those two girls are sisters that fuck each other; they’re incestbians.

“The McPoyle sisters are incestbians!”

“Kayse and Becca aren’t dating?”
“No, they’re just incestbians.”

Margaret McPoyle fucks her sisters… they are incestbians

by bexx9 November 29, 2021

Incestian

A person who is a part of a incest cult

“What a Incestian”

by Fat bird May 7, 2022