I... I'll postpone the experiment...Do you know which parts of the body are used in intercourse?I don't.Waitwaitwait, what? How-Ah, I'll show you a video.Wait Guinea Pig! I'm not mentally prepared!Y-yeah...Fufu, I knew I could count on you.Tachyon, don't be too surprised at what I'm about to tell you...Oh well... You're at the age where you should know...Hm?