Volunteer for a laughter simulation test gets tickled and edged by the nurse in multiple stages that get worse

Description: A volunteer for a laughter simulation test finds himself tied down and blindfolded after agreeing to everything the nurse says, she tickles him in stages testing his reactions and ticklishness, for each stage it gets more intense, more tools, harder tickles, and a sadistic nurse showing no mercy brutally tickling him until she wants to stop.