It's the biggest hands-on-head craze to sweep the nation since the Y.M.C.A dance. It's also - amazingly - easier.
Yes, it's the 'Mobot' - the trademark move of Mo Farah. Well, unless you count 'running very fast' as a trademark move.
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The Mobot was apparently invented by Claire Balding - no, really - and now everyone's doing it. Even Usain Bolt. And he already has a trademark move (not including 'running very fast').
Just check out our gallery of celebrities and mere mortals doing the move...