A Human-Elbonian Handshake
Coincidentally, the daily Dilbert comic also features a somewhat alien handshake, as was the case with Robonaut’s handshake.
Wally nicely takes advantage of the gullibility of his Pointy Hared Boss, who, like so many induhviduals, apparently believes in what one might call ‘Inter-Cultural Gesture Determinism’. It is one of the The Biggest Misunderstanding About Gestures that you should be wary of using gestures when talking to strangers. I believe that, generally speaking, when you meet people who speak another language or come from another culture, gestures are your best friend in communication.