You don't the find the sweat pants anywhere. Also your son/yourself walks into the room!

By the time you give up the search you hear the bedroom door open and you spin around still naked only to see yourself or rather your son standing there. His eyes wander your naked body and his cock becomes fully erect as you can clearly see from the bulge in the crotch of his pants. He starts stripping out his clothes and the more nude he gets the more aroused you get though you try to hide the fact.

John walks up to you and pushes you onto his bed where he spreads your legs apart. He aligns his cock with your wet pussy and thrusts into you. John wraps your legs around his waist as he thrusts into your pussy and takes one of your nipples into his mouth and plays with the other nipple. You find yourself moving your hips in a circular movement in rhythm with John's thrusts.

John stops sucking your nipple and comes face to face with you and asks "Do you want me to cum inside as I'm getting close or do you want me to cum outside?"