I have to pee SO bad! I think you're in the shower so I burst in—and catch you stroking your cock! Ohmygosh! I'm so embarrassed... but that doesn't stop me from noticing how big your cock is... I'm starting to get turned on from what I just witnessed, when you admit that you were thinking about ME while you jerked off! Me?! Your own sister? I giggle and get even more turned on at how dirty it is! I want to have a little fun—but we can't really do anything since you're my brother! Just look at my huge tits and perfect Princess pussy while you stroke your cock for me... I can't let you fuck me but I need you to cover my pussy in your cum! Tags: alt, alternative, big boobs, big tits, BBW, curvy, chubby, jerk off instructions, Princess Kira, prlncessklra, princesskira, step-brother, step-sister, step-sis, bro/sis, cum, cumshot