You catching me practising sucking a dildo, you're going to tell mum and step-dad but I try and come to a deal, but you have an idea, I'm a bit reluctant at first because you are my step-brother, but once I see your lovely cock I get carried away and end up sucking and fucking it. You cant cum in me though, but I have never tasted cum so how about you cum in my mouth instead. Quick get out, I think I just heard mum and step-dad get home.