So I was a horny teenager I was for ever wanking well I heard moaning coming from my sisters room I took a look what a sight I saw my very sexy sister riding her boyfriend’s dick her arse looked amazing bouncing up and down.

I could see her tits slightly swinging about I had my dick in my hand wanking I cunt believe what I was seeing.

I cum but still had to look my sister turned round and saw me hand on dick watching her fuck.