Just out of curiosity, what do you consider incest? In our family we have anal and oral sex with other adult family members, male and female, and don't consider that incest. It is our belief that only sex with vaginal penetration is considered cheating on ones spouse, or incest if it is with a family member. Casual anal and oral for fun with any consenting adult is okay.
You might want to check the laws where you live. You might not consider these things incest, but the government will still lock you in a cage for doing them.

