Whisper of your sisters mad and burning desire for your father

It would be too risky to involve yourself. Too dangerous.

You duck down, moving your lips closer to your sister's waiting ear and whisper; "You fancy dad."

You can't stop erect cock slipping through the front of your boxer shorts. It's so close to your sister! "You... really want to play with his stiff dick," you whisper again.

Images of your sister on her knees in front of your father flicker through your mind. For now, just for a second or two longer, you decide to leave your erect cock out on view and near your sister. "You must fuck him. You need to. You want to ride his cock and then want more."

Now it's a challenge to hide your rock hard penis away, touching it to push it back behind your underwear sends a thrill through your body, "You want to suck cock. You want it between your breasts. Family cock; you love it. Your mind is made up. Tomorrow morning you'll climb onto your father's lap, spread your legs and sink his cock into your pussy."

Have you gone too far? A panicked pause. Your sister stirs but does not wake. Deciding you should stop while you still can you slowly ease back into your bed.