Some girls sometimes have a hard time transitioning to actual womanhood when puberty kicks in, you know. It’s a familiar thing. Some of them will have a hard time accepting their new feminine bodies. The bigger boobs and all that. So, they resort to wearing big ass baggy clothes that conceal them and make them look androgynous, as they looked before the hormones kicked in and all was fine with them. Well, my gorgeous step-sister was like that, obviously. I mean, I’ve never seen her wearing any feminine clothes, and I was honestly beginning to think that after all this time, she became a lesbian or something. Honestly, I have no Idea, I guess this sexuality thing is just different for everyone. Teasing the tomboy over it obviously worked out well for me eventually, because she just snapped today and pushed me down to the bed and decided to prove to me that she is no lesbian. She craves cock just as much as any girl out there. Honestly, I was overjoyed by this. Not that I cared much about someone’s sexuality, it wasn’t like this at all. Rather, I was just happy that she decided to convince me that I was wrong like this. So as I said, she snapped and pushed me over to the bed and started sucking on my cock vigorously and she was making me drip in pre-cum. My heart was pounding insanely hard as she sucked on the sip gently and then moved on to full-on deepthroating. My sister was eager to prove me wrong and show me just how much she loved cock. We moved on to some hardcore doggy style fucking right next to the door with some occasional sweet kisses. When our dad came knocking, she opened the door and talked to him while I was fucking her behind the door. She might have dressed like a butch lesbian, but she fucked like a crazy whore! We went back to the bed, since it’s more comfortable there. From here on, she just rode me till we came.