产品介绍 (Kink University - How to Perform Double and Triple Penetration):
Airtight techniques for double and triple penetration. Simultaneous multiple-cock sex with one female is a common sexual fantasy, and an epic scene whether in porn or real life. But what looks easy on screen requires some special preparation, skills, and positioning. This no-holes-barred tutorial shares the porn star, polyamorous, and swinger party secrets of managing multiple dicks in one person. Techniques include double penetration (ass and pussy), spit-roasting (oral and vaginal), DVP (double vaginal penetration), and even airtight (oral, anal, vaginal).
