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movement of sperm
00:05:36

movement of sperm
100doctor
17,104 意见 · 2 年 前

secret about human

Coitus Education of Anatomy and Psychology
00:00:00

Coitus Education of Anatomy and Psychology
100doctor
12,006 意见 · 2 年 前

some knowledge

anatomy of human (china)
00:02:05

anatomy of human (china)
100doctor
31,792 意见 · 2 年 前

The language is chinese mandarin(Putonghua)

treatment of impotence(Tiedang gong)
00:15:08

treatment of impotence(Tiedang gong)
100doctor
136,042 意见 · 2 年 前

Mysterious massage from East Asia(CHINA).it can cure cure Erectile dysfunction,can let their life better.This video from mainland of China,so the language is Chinese mandarin.but you can see English show on the video too.Tiedang gong means kongfu of Iron penis&balls.

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