I guess my brother and I have always had some kind of a "special" relationship. We were always united, inseparable and, at the age when all siblings fight a lot we were building a solid relation, based on mutual understanding of each other's problems and, despite everything we were and are best friends and confidants. I don't exactly know what caused this closeness between us, maybe it was Father, who is very restrictive and sometimes unfair towards me, maybe we just felt that we're family and family stands above everything.We didn't seek a confidant outside the family because we were afraid that nobody will truly understand us. Lately, since I became a young woman and grown a Big pair of Titties, everything I wear is too showing for Dad, too sexy, too whorish. This does nothing but encourage me to disregard his mischievous and retrograde remarks by dressing really provocative, wearing make-up and being as bratty as possible! Between me and my brother, besides our friendship, there are other feelings: we are sexually attracted to each other, but we never had the courage to act up on it entirely. I allowed him to masturbate in front of me many times, but the fact that we are brother and sister functioned like a moral restraint - something taboo! This time I dressed up really nice and slutty for the Christmas dinner with the family, to piss off Dad and to impress my brother! I chose a very short velvet dress (my ass was really showing there) and my brother was convinced that Dad will throw me out, we even bet ten bucks on that! He also told me that I look hot and that I'm turning him on. I suggested he can masturbate, like usual, that I'll show him my Beautiful Big Tits as he jerks off. But I really wanted more this time, plus, my brother is really handsome and has a big cock... I never got around to buy him a cool Christmas present so I thought a blowjob will do it! He was so surprised when I put my lips on his penis... like a boy when he sees Santa Claus! Christmas is all about surprises, so I guess I "found" the perfect gift for him! I sucked it slowly at first, then I decided it's time for another surprise so I DeepThroatd his cock multiple times (well, he had no idea I have magical abilities!), synchronizing my breath with my moves, to be able to DeepThroat it as much as I could. I tried a lot of moves and tricks on his cock, I had to know what he likes most, because it was the first time we're doing this and I didn't know his preferences. Apparently I did a very good job, that cock was becoming harder and harder in my grasp, I almost had difficulties DeepThroating it! But this is not the end of the story, there's a chapter two! We had sex! It wasn't hard for me to convince him to put that monster of a cock inside his li'l sis! We fucked DoggyStyle on the rug, under the Christmas tree, I'll never forget the feeling of his cock pounding my wet pussy, the smoothness of the rug, the smell of the tree, the in-commensurable pleasure. I had two orgasms and I wanted us to continue, but it was extremely hard for him to resist, the urge to cum was simply too strong. He pulled it out and I rubbed his cock making him cum all over my Big Boobies. We were extremely happy after, like two sibling who doing shenanigans without parents knowing. Best Christmas ever