It is supposed to be be quite effective."She smiled and said "I brought one hundred dollars to spend."I just said "No problem, I might buy you a gift ...nd put it under entertaining expenses."Marcy laughed at that and said "That is for entertaining clients, not your secretary's sexual fun."I just shrugged and said "Whose to know? And if you get turned on and fuck me silly, and I do a better job the next day, because I am not frustrated, and I make a big sale, then why shouldn't the company pay. I told her and she was aroused by it. It continued for some days. One day, I told her about a threesome movie I saw and she questioned me how two guys can have sex with a girl at the same time. Then, I showed her that clip. She was enjoying it like anything. Afterwards, she showed interest in seeing only threesome movies. One day when we were having sex, I asked her would she love to have two persons at a time. She said no. After some time, she asked me whether I will allow such a thing to. He could also see that her other hand was on her right boob.Kathy gently rolled and pinched her breasts as her other hand moved under her shorts. Kathy was intently watching him ball her sister and masturbating at the same time. This turned Vince on even more and he increased the speed of his ride which caused Mandy to moan a little louder.As he dropped his head to lick Mandy's erect nipples again he locked eyes with Kathy's. She returned his stare and then continued masturbating with her eyes. My God, what am thinking. No, it can’t happen again,” she mumbled out loud, and put a small hand over her mouth. She was feeling a little sick now…. she had to get in control of her emotions or she’d go crazy.She felt so ashamed and guilty; she was afraid of how her mother would react if she ever found out about them. She wondered if her mother had noticed anything different. She knew that their relationship would now be a lot harder to deal with than before.She finished off her cocoa, and then.