Do you know that In some remote areas of Austria, young women perform a traditional dance. On this occasion, the dancing women keep a piece of apple under their armpits and dance? Older women have sex with younger men on Mangaiya Island. Young people are first asked to have sex with older women to teach them how to please their partner? Sex is a primitive human instinct. Whether it is your bedroom or any intimate moment, you too may go crazy with your partner for various crazy movements. But in the case of sex, this craziness is probably your own. There is no bizarre custom or custom behind it. But did you know that there are various customs regarding sex among different tribal groups of the world? And all these customs are absolutely bizarre. One will be amazed to proceed into this strange world of sex. This book opens up these hushed up words to the public world.