Instepcest 

One step closer to incest

Wow! He’s marrying his step sister, that’s instepcest.

Instepcest by Kinfucky June 13, 2018

intercest 

(from combining internet + incest) When you finally meet up with your 'secret' internet lover & find out that it's your dad/mom/brother/sister/aunt/uncle/cousin

- Dude I'm never chatting on mIRC again, did you hear what happened to Bruce?
- What?
- He met up with SexyGal4u69me & found out it was his sisterrrr
- Gross!! Intercest!!!!

intercest by catfight12 January 9, 2009

intepesting 

What my cellphone spells out on auto text instead of interesting.

Fuck, my phone just spelled intepesting again.

That's intepesting, my phone doesn't spell out interesting.

intepesting by Fighting Pirate February 8, 2009