When you clone yourself and then have sex with the clone.
The University loaned me their cloning device; I've always wanted to try incesturbation.
by lclaymaz May 13, 2015
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Jerking off or masterbating while thinking about one of your family members
I had a two hour incesturbation session last night thinking about my moms hairy muff

by doing mom September 26, 2006
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The act of having sex with your clone.
"Gosh, mom! Knock before you just barge in! I was incesturbating!!!"
"Oh Lord! When did incesturbation enter this home!?!"
by Korgul December 02, 2009
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"What did you guys do last night?"
"My twin brother and I attempted to incesturbate for the first time"
by Garooshnar December 20, 2016
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When you fuck the other sex version of yourself.
Turns out the girl i fucked, was the female version of me from a parallel universe.
My face when i just incesturbated .
by Cerez-X March 10, 2018
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