It was Jon's Aunt Joan, his mother's twin sister. Jon had completely forgotten that she was coming over for the weekend. Being his mother's identical twin, Aunt Joan was just as hot as his mother. "Hey sis," she began. "Sorry to stop in early without calling, but I wanted to suprise..."
She stood in shock to see her nude sister and nephew. "What? Why? What's going on here?"
"You're my bisexual girlfriend," said Jon. Maybe not the best answer, but it was a lucky one.
"Of course I am," said Aunt Joan. "Did you think I'd let you fuck this pretty piece of ass without letting me join in?" She squeezed her sister's ass, causing Jon's mom to squeek in suprise. "Its just too bad that I'm here less often. It'd be so much more fun if our threesome could get together more often. Since you two are already naked, let me get these things off and join you." Aunt Joan quickly stripped, strewing her clothes around the room and the two identical women dragged Jon to bed with them. Jon plunged into the deep end of sexual ecstasy with a grin on his face.
