"Dad! If you get an erection looking at your daughter's panties, you'll be punished!" I can't stop reacting to the glimpses of my wife's stepdaughter's panties under her miniskirt, and as the little devilish girl tries to hold onto my dick so my wife won't find out, I give in to her temptation and thrust it in through the thin fabric, and she sweetly asks, "Can I move your panties aside?"