One night I came home and I was exhausted that I decided to go straight to bed and watch a little TV. I was lying in bed watching for quite some time when I heard moaning from the next room. My brother has a foot fetish and I've always found it quite intriguing myself so I turned down the television to hear him more clearly.
He was moaning and screaming 'Yes you dirty girl'. I was instantly turned on by this. Wow! I felt my pants getting tighter and I decided it was my turn. I took my penis out of my pants and began to stroke and tickle my balls a bit. I then sucked two fingers and inserted them in my anus. I stroked and stroked and fingered.
All while my brother was doing his own thing in the next room. I think we may have cum at the same time because we met in the hall on the way to the washroom. When I came, I almost blew a hole in the wall. The next morning at breakfast was quite humorous, however we have never spoken about it since.