Just play with it

You can hardly help yourself as you continue to examine your father's partially erect cock. You decide that you aren't quite ready to jump your father but you that shouldn't stop you from playing with it a little.

You gently wrap one hand around his thick member and lift it up. Even now, your hand barely fits around the girth of his cock. You gently trace the veins on it with your other hand, paying special attention to the central line going from the head to his balls. As you begin to stroke it harder it begins to stiffen in your hand. As it reaches it's full potential, you marvel at the sheer thickness and length at over 10 inches and more than your hands can wrap around.

Now fully erect, you trace on circles around the endured head with one hand as you begin to pump up and down with the other. After a few moments your father begins to stir and you pick up the pace. You continue jacking him off as you place the other hand on his balls and begin rolling then around between your fingers.

"Oh Nancy. I really didn't expect this since you already let me fuck you once today. Damn does it feel nice though," your dad mutters as he arches his head backwards in pleasure.

All you can respond with is a muted "uh huh" as you realize the idea of your parents fucking earlier in the day only turned you on more. You know your dad wants you to continue but you're also afraid to get caught.