This wasn’t my fault. I didn’t know my stepsister was an online slut or that her videos would be so fucking hot! It was natural for me to stroke my cock to it, but then my stepmom caught me, and she took my laptop. Looks like this was a day of revelations, because I also wasn’t expecting to see my stepmom rubbing her pussy to it! At that point we wanted the same thing… so why not share it?