when 2 or more people that are closly related have a sex or sexual acts.
In this incest video, ther are two sisters making out
by what? huh? June 19, 2003
When people in the same family fuck or have some kind of sexual contact...

((sex-head-eatin out-fingered-kissing-beatin meat))
Rita.She fucks her brother.
by Annonymous February 21, 2005
The wrong way to spell "incest".
At least 3 people on urban dictionary can't spell worth catshit. How do you fucks thing that " insest " is right? Jesus christ.
by Dr. Saynt March 22, 2009

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