Can't control himself

Josh stops for about ten seconds and is right back to masturbating. He slides in a finger and lets out a soft moan as he spreads his newly acquired pussy walls again.

He leans back and enjoys the rubbing. It feels so good compared to his dick. He instinctively clenches when he presses a certain spot.

He wonders if that's his g-spot. Whatever it is Josh keeps rubbing it. Softly at first, then harder. His breath quickens and he can barely control his moans. He knows he's getting close to climaxing.

Loud knocks on the door interrupt his fun.

"Josh are you in there? I need some help."

It's his sister Holly. He jumps off the bed and pulls his pants up. He sighs from frustration but quickly wipes his finger on his shirt and opens the door.