"Snogging, smooching, necking—whatever you call it, everyone’s doing it. Or are they?
The answer might surprise you. Kissing isn’t universally accepted and, even today, there are some cultures that have no place for it. Indeed, some 650m people—or about 10% of the world—don't partake at all. Until contact with the West, for example, kissing wasn’t practiced among Somalis, the Lepcha people of Sikkim or Bolivia’s indigenous Sirionó."