"I let Tommy come in my mouth so I won't get pregnant," Sandy told her. "I mean, who wants to get knocked up by their brother?"

"I never... I mean, what does it taste like? Is it bitter?"

"I love it. At first I was afraid, and all I could taste was my own pussy after Tommy had screwed me. But I let him anyway because he said some of the girls he had been dating did it for him and I should learn to do it for my boyfriends. So he taught me. And I taught him something, too."

Susan waited breathlessly.

"I taught him how to eat a girl and make her come. Tommy says that's the reason he has so many dates. He's so good at it! I just love it when he goes down on me. You'll see. I'll make him do it to you, too."

That night at dinner as Tommy looked at her and smiled, her cheeks burned with embarrassment and anticipation. She felt as if her aunt and uncle knew everything that was going to happen, but they chatted banally. As soon as dinner was over, Sandy and Susan went up to Sandy's room.

"Take off your bra and panties," Sandy told her as soon as they were inside with the door shut.

"They'll catch us!" Susan whispered.

"No, after dinner they usually go out for some dessert. Then we can get ours," she giggled as she quickly pulled down her shorts and skinned off the briefs she was wearing.

Susan did the same thing and then lifted up her T-shirt to remove her bra.

"You have nice tits," Sandy told her. "Tommy says he wants to suck them. You don't mind do you?"

Susan didn't mind because the first thing that Tommy did when he came into the room was to kiss her deeply and then bare her breasts to lick and suck her nipples.

Susan moved the wet vibrator over her nipples as she dreamed of how Tommy and then Sandy had taken turn sucking her tits. If they could only se them now, she mused. So much bigger and so much softer!

She had been afraid it would hurt, even though she had pret-....This bisexual story continues HERE