Standing there in my bra, I wasn’t showing any more than I did in my bikini, but it felt much naughtier. It was just an ordinary white bra, not espe...ially sexy, just doing its job of holding my little tits in place. Taking a deep breath, I reached behind my back and undid the clasp, slipping the straps down my arms. With a little shiver of excitement I glanced around again, then pulled my bra right off. I looked down at my little breasts. My pink nipples were standing up like firm little. She was amazing. Such attention she gave to me, better than any head any other gilr had ever given me. After about 10 minutes I began to miss her cock so we moved into a 69 position with her on top. Lisa's cock was spent, so I began by placing her soft dick in my mouth, moving my tongue around and around until it began to get hard again. Having her suck my cock while I was sucking her brought me to an enormous climax. I wanted to cum in her mouth so I said nothing (but I'm sure she knew. I move around behind her, and again embrace Her waist. i allow myself the pleasure of a light stroke across Her right breast, a brief tweak of Her nipple, but i move on, down across the front of Her blouse, and around to Her buttocks. i feel the tension in Her thighs as i brush across them, and the angle of Her legs has made Her skirt ride up, making it shorter than it really is. i pull the skirt up a little more, transfer the knife to my left hand, and slice through Her panties. Again i am. I didn't know if I should just turn around and pretend I didn't see anything or if I should be Mister macho guy and go up to protect her honor. Knowing my sister, I was certain she was on her knees willingly and she really gave the impression she knew exactly what she was doing and had matters well in hand, or rather, well in mouth.Thinking more of the family honor rather than my sister's completely ruined reputation, I started kicking wannabe gangster ass but eventually wound up in the prone.