STEPBROTHER CAUGHT WANKING

I can't do that, can I? My stepbrother and I were alone at home because our parents were away. Suddenly I hear loud moaning in his room. I open the door quietly and secretly and see how the little sow is just wanking over my porn... He seems to really like what his stepsister is doing on the internet hihi. Actually, it's really weird, but somehow this sight made me really horny to watch him wanking. But why does he have to have such a hot big fat cock? My cunt is already getting really wet.... Shit, now he's seen me at the door with my hand already in my pants. Happy ending for both of them or embarrassing justification?