In the depths of the last Ashes winter (which was, of course, summer from an Australian point of view), my friend Gideon Haigh raised the question where the practice of England's batsmen had originated of touching gloves whenever something mildly encouraging happened for them:
Can anyone remember where this habit began?... Do English cricketers now greet people socially with a jab of the fist rather than a handshake?
In the context of the US presidential race, the suggestion has been made that it is a 'terrorist fist jab' or 'bump'. One more story under the heading 'Everything happens'.