You've bragged to one of your buddies about your hot step-mom who farts uncontrollably and strokes your cock from time to time while doing so. This friend in particular is who showed you and got you into fart porn. So, he totally thinks you're making the whole thing up. "There's just no way." You get irked and tell him to come to your house this weekend. Your step-dad will be out of town and your step-mom will more than likely be having a few drinks and relaxing. Oh, and of course, farting. He agrees. Hopefully things go as planned, if not better!