Tracy takes the lead
From Torg Adventure
"Really? You want to fuck your brother and let him knock you up?" Tracy says, a little excitement in her voice.
You're not sure why she would be happy about this development, but you know that you just got hard thinking about Millie's proposal. Also, Millie has been hiding her body for years under bulky sweaters and such. Seeing her naked, even in the dim light, is giving you another reason to be hard.
"Yes, I want in on the fun. Plus I want to see Mom and Dad's faces when we tell them. That I'd pay money to see. I'm still mad at them for sending me off to boarding school. Besides, listening to you two rut for two weeks has been driving my crazy with lust. I rubbed myself raw the first week until I started putting my pillow over my head. If I don't get some action down here, I'm gonna go stir-crazy."
"I think I can agree to your proposal, Millie," you say to her.
Tracy says, "So, did you fantasize about {firstname} taking your cherry, Millie? Did you dream about him filling you night after night with his hot jizz? Did you wish it was you up here instead of me?"
Millie chuckles a little. "Actually, I fantasized that I was up here with you, Tracy. That he traded off filling us both, while we kissed and groped each other. You have no idea what goes on at night at an all-girls boarding school."
You thought you were hard before. When the images of Millie and Tracy making out hit your brain, your cock practically grows.
"You mean like this?" Tracy asks before she leans in and kisses your youngest sister. Millie's eyes go wide, but then she kisses back. Tracy moves a hand up to Millie's C-cup breast and squeezes it hard. Millie moans into Tracy's mouth. It's Tracy's turn next to groan and you look around in the dimness to see why. Then you notice Millie's fingers in Tracy's kitty and her thumb on her clit. She doesn't waste time, does she?
The girls break their kiss rather loudly with a mutual gasp. As they roll apart a little, you can see that Tracy also has her fingers inside Millie.
Millie says, "You surprise me, Tracy. I had no idea you were bi."
Tracy replies, "One of my boyfriends convinced me to have a threesome with another chick. I liked it so much, I dumped him and dated her for a semester. I've never thought of you as a potential sex partner, what with incest, but that doesn't matter any more. I've always thought you were cute and attractive."
"Well, this is fun and I want to do it some more, but it doesn't address the topic of the hour," Millie says, as she sits up and bends over to grab your cock out of your hand. You had started stroking it to the hot lesbian incest display before you. She licks it from bottom to the tip, and you let out a low moan. She starts licking it like an ice cream cone.
"Mmmm, you taste like pussy, {firstname}. Have you been naughty with your sister?" Millie whispers.
Her mock innocence just turns you on so much that you lunge for her and kiss her. She startles, but then returns the kiss. Then Tracy makes her lay down in the middle of the bed, and you and Tracy got on each side of her. Tracy kisses her while you suck on her nipple. Millie moans into Tracy's mouth.
"Oh, my God! I get you both!" Millie exclaims breathlessly.
What next?
