@parados,
parados, I've been pondering your dilemma. The only way I can think of that you can cheat on yourself and not give yourself away is to get amnesia. You won't remember you cheated, so you'll be able to deny it with honesty and integrity. How do you get amnesia? Conk yourself on the head and see what happens. Be sure to leave yourself a note so that if you get amnesia, you'll know you're supposed to cheat.
I'm getting confused. You figure it out, you cheater you.