She worships your cock, take +1 forward

There's nothing like an orgasm to make a woman step up her enthusiasm for sucking cock, apparently. Your youngest sister throws herself at your blowjob, twirling her tongue deliciously under and around your cock, while maintaining the sucking pressure of a vacuum. You start thrusting into her lovely mouth, beginning to fuck her face slowly, and then picking up the pace as she seems to tolerate it. You seriously face-fuck her for a minute, as her moans get louder and more plaintive.

She takes you out of her mouth and says, "Oh, my God, Tom! I want your cum so bad!" Then she takes a ball past her lips, making you grunt. She switches testicles, and you begin to feel the tingling that precedes shooting your load. Madison kisses up the shaft, lavishly licking as she goes. She swallows you again and attacks your cock with her throat, while she plays with your balls in her hand.