Marilyn Chambers was my first. Nowadays porn is but a smartphone away, but back in the 80s it was not easily obtainable. Most of my friends and I were seasoned vets of T&A flicks within just a few months of getting our first VCRs, but every now and then we still managed to find something that blew our little libidos. For me it was Marilyn Chambers in MY THERAPIST, a frankly terrible shot-on-video T&A trifle (co-starring Buck Flower as a…