Hey Bro, any idea what's for dinner tonight? I just got back from the gym and I'm starving. Why are you staring at me so weird? Oh my god, ewwwwww!!! Do you have a hard on right now??? I'm your Sister, that is soooo gross!!! What if Mum walks in?! We *have* to get rid of that, what do we do?? Well, what if I tell you what to do? Come on, Mum could come in at any moment so just follow my instructions and do exactly what I say. Jerk your cock for your Sister ;)