Strangely, the husband-wife land is allowed to have sex with his wife's sister

From reproductive purposes to entertainment and beyond, sex has a place in every culture around the world. But the way people think about sex in other cultures as well as sexual norms and ethics is not the same.

Hidatsa women.(Artwork Alamy).

In some cultures, sex is perfectly acceptable when a man has sex with your wife, if the man's wife is pregnant. In the Hidatsa Tribe , North Dakota, USA, when the woman is at the end of her pregnancy, her husband is allowed to have sex with his wife's sister or sister.

While in the modern world, most cultures pursue monogamy, there are still some cultures that exist polygamy, men who are married to many women Sometimes and sometimes their relationship is done in very creative ways.

This list of crazy sexual acts around the world, from ancient times to the present, has stopped in Africa, Australia, India, Egypt and the Himalayas.

1. The strange sex customs in the world