Queen of the quips has the last laugh by giving the Prince of Wales a fit of giggles

The Queen is known in Royal circles for her wicked sense of humour, so it’s no surprise that she had Prince Charles in fits of laughter yesterday.

Her Majesty was suitably sombre as the pair attended celebrations to mark the 20th anniversary of the Scottish Parliament – but as soon as her official duties were over she reduced Charles to helpless laughter with a single quip.

Sadly, we’ll never know what the joke was…