In the classroom or library, a mischievous girl says, "jerk off in my skirt...". Feeling dangerous, but unable to refuse, I jerk off without being noticed. Moreover, I cum all over her panties! Excited by the large amount of sperm ejaculated, the girl lets me do something even more extreme than jerking off! Although the trigger was forced jerking off, in the end, I was able to insert it! I'm glad I jerked off.