You're busted! In my office jerking off to porn!? Not only porn but to step-mommy porn! Is this what turns you on?  I don't even know what to say.  This is so inappropriate.  And to make it worse, you want to re-inact this? Are you kidding me right now? I can see you have a hard on but I am your step-mother.  I don't even know if I should be flattered or offended.  But you do have a nice penis.  Take it out and let me see it.  If we do this, you have to promise you will stop watching that porn forever!