Spanking My Stepmom on Set 4K

I just found out that my stepmom has a dirty secret, and I KNOW she won't want my stepdad to find out about it!  She told him that she was working part time at the grocery store, but she actually has been working part time as a WHORE.  Oh, how I can use this to blackmail her!  I show up on her porn set and am waiting for her in her dressing room when she comes in to douche.  She can't believe I am there, and is desperate for me to keep this juicy information from my stepdad.  I know just what to do, and get her over my knee to spank her just like she used to slap me.  My stepmom is mortified, but she knows she has to get through this so my stepdad never finds out she's spreading her legs for the camera.  I spank her until her ass is pink, and take a dip into her wet cunt with my fingers to see what all the fuss is about.  My stepmom's pussy is SURPRISINGLY tight!  When I am satisfied with her spanking, I tell her I will go but only if I can come back tomorrow to work in a porno movie.