Take a look at a royal nose bump. Prince William and Duchess Kate ... things they did on arrival was perform the traditional Maori greeting gesture, the hongi. It's the equivalent of a handshake ...

Learn when to kiss, hug or fist bump. Britain's Duchess of Cambridge ... in keeping with the Maori custom for greeting friends. Pressing noses together is just one of many ways to say hello ...

It will last considerably longer than Andy Warhol's "15 minutes of fame." Thanks to Barack Obama, the Dalai Lama, and the swine flu, the fist bump will surely show up at a greeting near you.

Fist bumps were the cleanest greetings, David Whitworth of Britain ... because people use their hands to touch their eyes, nose and mouth. The mucous membranes are where the germs can get ...

Take a look at a royal nose bump. Prince William and Duchess Kate ... things they did on arrival was perform the traditional Maori greeting gesture, the hongi. It's the equivalent of a handshake ...