How many interesting and unknown things are hidden in the traditions of the peoples of our planet. And, the mysterious and forbidden topic of sex could not remain aside and, naturally, was reflected in various rituals and customs, a couple of very unusual ones. So, let's go on a journey. Australia Australian aborigines - warriors, instead of the usual handshake for us, demonstrate friendliness with a slightly different gesture, namely, by touching the penis of their interlocutor.