I live with my brother even if we have separate lives. It's cheaper and I feel comfortable with my brother because I know him so well. Even so, there is a sexual tension between us, I felt this long ago and acknowledged it. I was doing my daily aerobics wearing leggings and a Bouncy Sports Bra but my brother had nothing better to do than watch me and tell me what other exercises I should do. We began playing Simon Says, but this time things turned quite hot for the both of us! First he asked me to do some jumping jacks or running so he can watch my tits bounce along, after that I invited him to check on my ass which I consider being too flat and, he, like a jerk slipped a finger down to my pussy! It made me wet instantly. His boner was visible and I felt like having sex with him, no matter how forbidden and taboo is this considered. I knelled in front of him and took that big cock in my mouth. I sucked it slowly and sensually for a good while, surprising him with DeepThoroat all of sudden. He was impressed and asked me to do it again. I complied and offered him prolonged sessions of DeepThroat followed by rubbing his wet, DeepThroated cock, squeezing it like a ripe fruit between my delicate fingers. He was so hard, like wood! I continued sucking it until he told me to pull my big Boobies out of my Sports-Bra and to Titty-Fuck him! I already was horny enough, but sucking my brother's thick cock made me soaking down there. I gave him a savage TitJob while I was impatiently waiting for the moment he'll be inside me. I didn't much too wait, he said that's he's gonna fuck me now, simple and unpretentious. I was so happy! We did it DoggyStyle first, on the bed. He had a good sight on my curved ass too! We continued with me laying on my back and rubbing my clit like crazy! He made me cum three times, I couldn't wish for more! The orgasms felt so strong that all my body shivered and contracted, my nipples became extremely hard. Simon says it's my turn to make him cum! I did, jerked his cock and rubbed it between my boobs, a little session of hands-free TitJob was all he needed to cum: he came all over my boobs and he came a lot!