SPH JOI - MY STEP-BROTHER FUCKED WITH MY BEST FRIEND AND NOW IS GOING TO BE PUNISHED

My bestfriend told me that my stepbrother fucked with her... completely in shock but... she said that my stepbrother had a micro-cock and she could barely see it, so I had to confirm! What's the best way to give him a little punishment other than humiliating him and his tiny tiny cock?