SDJS-223 Multiple clothed SOD female employees thoroughly study the embarrassment reactions of a naked man, seriously conducting nipple encirclement experiments. SOD Sex Science Lab REPORT18: Despite being bewildered by the sensitive responses, they can't

Film Introduction

The purpose of this training is to expand the sexual knowledge of female employees for new projects, products, and businesses. We will research the relationship between male nipples and penises. How do nipple stimulation affect penis erection, semen volume, and male reactions? Despite feeling shy, female employees will seriously touch and lick nipples and penises to explore. We will deliver their reports.