You walk in on your big sister blowing her boyfriend. She doesn't notice you, and you can't look away. You've had a thing for your sister.. forever. Seeing her mouth wrapped around her boyfriends cock, how much she likes sucking it, you feel your cock stiffen. Her boyfriend points out that you're in the room, and even though she's shocked you're here she doesn't stop. She turns around and starts teasing you, pulling at her top, asking if you want a peek. The buttons on her top pop open, revealing her lace bra. She slowly strips down, asking if you want to see her pussy too. She slides her panties to the side, all while looking at her bf and touching his cock. Her pussy is soaking wet, she's just such a slut for a big cock. She wants him to fuck her. He slowly slides his pussy inside her missionary, she can't believe she is fucking her bf in front of her brother. But she's so wet, you can hear it. She can't stop. He bends her over, and starts fucking her from behind. You take your cock out, and she cannot believe how big you are. She doesn't mean to, she says she shouldn't, but she takes you in her mouth anyways. Your sister is being spit roast and its her own brothers cock she's taking in her mouth. Her boyfriends cock starts jerking and she knows he wants her to swallow his load. She turns around, her ass facing you. Her pussy just waiting there, pink and wet. Your cock teasing her, missing a few times but she takes it and slowly slides in the tip. She's shocked her bf didn't notice. He cums in her mouth and she tells him she'll meet him in the shower. Now you've got her all to yourself, your own big sis. Her legs wrapped around you, a total fucking slut for your big dick XO Tags: taboo, family, sisters, sluts, threesome, POV, bother sister roleplay, cheating, cheating fantasy, spit roast, big dicks, big tits, brat girls, voyeur, Harley Sin, eye contact, brunette, tattoos