I've just listened to my older brother Kyle fucking his girlfriend. He's been making her take his cock anally for the past few weeks, ever since I told him I'd love to have his large thick cock up my asshole. I caught him masturbating in his room two nights before I asked him to fuck me, and saw just how big his dick is. It's a lot larger than my boyfriends, who's dick is about seven inches. Kyle told me once I turned eighteen he'd think about shoving his length up my ass. It's my birthday in five days time, I hope Kyle's horny then and wants to fuck his sister. If not I might just seduce his girlfriend, as I know she's been with an ex girlfriend of mine.