Her older sister was in college, and engaged. She was spending the day off by herself, wrapped in her own amusements, ignoring the party.Our host, Chu...k Senior, and his wife were partiers. I wouldn't have been surprised, even then, to have learned they were swingers. My Mom was here because she liked to drink in a social setting, but she wasn't really in the same league as Chuck Senior and his wife Rose. Oh, and we shot Trap together on Sundays.I knew all the other adults at the party, mostly,. He now was regularly fucking Barbie and keeping her nude most of the day. Also, she was now frequently required to perform oral sex. The once innocent young teen could now suck her stepfather’s cock without gagging and swallow his cum without getting choked, along with having orgasms when he fucked her.Barbie hated what her stepfather was making her do. Even hated more the fact that he could force her to have an orgasm while fucking her with his hard cock. While she had to admit that she did. I began to stalk her on the train with the precision of a sexual predator hungry for prey. I would make sure I would stand next to her on the train while her husband was standing right next to her and try to get her attention by staring at her. It eventually escalated to me standing behind her on the packed train in the morning with my cock getting ever harder with the sway of the train while it bounced and rubbed on the crack of her ass. Thats when she began to noticed me. I even made note. Then he told her to take off her skirt, and took some more pictures. He told her to drop her bra, and she did, and he took even more. She had figured where he was going, so it wasn't a big surprise when he told her to take off her underwear. She had asked him, "WHY?" He asked her, "Did you look at the pictures on the wall, when you came in? I need naked pictures of you, so you can work here. We put them there, so the men that come here can see who works here, and what they look like. THEN they.