Your curiosity gets the better of you. "Can I feel it?" you ask, meaning Dad A's erect penis. He hesitates for a moment, glancing at your dad before turning back to you with a reassuring smile.
"Sure," he says, moving closer and guiding your hand towards his crotch. "Just be gentle, all right?"
As your fingers touch the warm, firm flesh of his penis, Dad A lets out a soft moan, closing his eyes briefly in pleasure.