There's even a "world championship" hosted by Bertie Draycott, who claims to have pioneered techniques such as the Newcastle Knuckle Knock and the Fishburn Flick, in which, he says, the flicking of the thumb imitates the wing of a racing pigeon in flight.

Mind, he also says that he played the spoons at the wedding of Princess Anne and Mark Phillips, so you might want to take his claims with a pinch of salt.