Remember that game - 'Sausages'? You have to insert the word 'sausage' into any sentence when you are told to, and if you crack a smile, you lose.
The thing is, Peter Robinson's success as First Minister in Northern Ireland (now it's all settled) is almost entirely bound up in his ability to not be photographed smiling in the same shot as Martin McGuinness.
And the photographer that can get them giggling will be able to sell the snap for a fortune.
It doesn't bode well...