Travel discoveries - absolutely horrifying: seven ancient perverted sexual customs (picture series)

There's nothing strange in the world, and the times are progressing. But human wisdom does not always keep up with the times, especially in sexual customs which can be even more horrifying. Recently, a American sexology organization found during its global travels to study weird sexual customs that there were many places where people still remain ignorant and have weird sexual customs. Some of them are so extreme that they are not exaggerating when described as "horrifying".