It is a M for Mo. Claire Balding made it up for him!
It's the Mobot. It means Mo Farah is a legend! :)
Bone Thugs N Harmony fans used to do it and shout 'MO, MO, MO !!!' in concerts during the 90's.
I think it is a reference to that.
He's doing a letter M for Mo, like you do when dancing to YMCA.
Mo Farah ain't British. His gold medals for Britain is a farce.
http://i.telegraph.co.uk/multimedia/archive/02306/farah2_2306842b.jpg
