Mind Blowing (2017)

When Xander agreed to participate in a paid memory test with his wife, he had no idea that he would end up trapped in an observation room with Nicolette, a hot assistant whose only task is to discipline Xander when he gives the wrong answer. ... Luckily for Xander, Nicolette envisions punishment not unpleasant at all - unless you're a fan of hard, wet pussies.