It was heavenly, never before had she felt anything like it, she was used to smooth shafts from guys and toys but these ridges gave a whole new sensat...on. Nature had moulded the human penis perfectly for its purpose but the company who had made this strap-on cock had perfected it for pleasure!“Does my little girlfriend like that?” Stephanie said responding to Cathy’s groans and gasps as she fed more of the strap-on into her. She smiled when Cathy nodded her head vigorously and thrust her hips a. I was slaving away in one of the bathrooms and had no thoughtson where she was or what she might find."Whose are these?" Whose are what?" I asked without turning my head."These shoes." What shoooo..." I started to say before it dawned on me what she haddiscovered. It was my high heels. My 5" stiletto, black patent leatherheels... the heels that I wear when she wasn't around. They had been hiddeep in the closet jumble."Those... those are mine".She didn't say another word and neither did I. We. Was she happy? Maybe she w- My thoughts are interrupted. The shower curtain flies open. Standing there, naked from the waist up, is my supposedly innocent sister, April. "Hey John. May I join you?" I sat there speechless, not even trying to cover up my still hard dick. "G-Get outta here... Now!" I finally find the courage to speak up. "I don't think so." she says, almost like a dominatrix."This is wrong!" I retort, covering my dick."You know you want me. I saw you watching me masturbate last. Rich studied Physics so he didn't have many female friends, so the party was mostly made up of males (no offence intended to physics students, but the course isn't very female heavy). The night went on and I was having a great time, but at around 11:00 Tara gave me 'the look'. The look we'd perfected over the past year. It meant basically, okay, who's doing who? I shrugged. Tara smiled cheekily and announced to the two boys sat on the sofa with us that we were holding a sofa meeting upstairs..