incesterbation 

When you have sex with your clone, your doppelganger, or a version of you from a parallel universe.

If you clone yourself and then have sex with the clone, it is neither incest nor masturbation, but both: incesterbation.

incesterbation by Anon Imus November 16, 2006

Incesterbation 

The act of having sex with your clone; a mix of masturbation and incest.

Spotti cloned herself and I caught her incesterbating, and it was awesome. It was some pretty hot incesterbation.

Incesterbation by Taliaa July 16, 2007

Genderbent Incesterbation 

incesterbation but when the clone of yourself is genderbent, and not a clone with your biological gender.

Man, have you ever wanted to have Genderbent Incesterbation? Male me would be so hot!

Genderbent Incesterbation by sharkmother March 10, 2023

Incesturbation 

To have sex with your clone.

I engaged in some hot incesturbation last night!

Incesturbation by livejamie June 7, 2004

incepturbation

jerking off on a video of you jerking off while recording yourself jerking off to a video of you jerking off.

dave: i walked in on greg's incepturbation session last night. he had the whole setup, it was gross!

incepturbation by peetr March 31, 2013

Incesturbation 

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.

Incesturbation by lclaymaz May 15, 2015

Incesturbation 

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

Incesturbation by doing mom September 26, 2006