Only in threesomes

Amy catches you in the hall wearing just a towel from your shower.

"All right I managed to get mom out of the house, we have a least two hours before she can be back", she said. "I'm glad I remembered Aunt Ellen needing her medicine. I was really beginning to wonder how we were going to get Tom out of the house."

"Tom", you say confused.

"Hey, we have two hours lets not waste it", a masculine voice behind your sister says.

You look up to see Karen's boyfriend Tom, walking naked out of Amy's room and coming towards you. You are frozen at the sight of his huge cock swinging as takes you in his arms and kisses you.