This video shared by David captures pure joy, with the little boy’s tiny giggles bubbling up like a fountain of happiness.

Body language expert Judi James suggested Meghan provides the "royal effect" whilst Harry and the players "giggle and chuckle like schoolboys".

The humanoid robot can detect when you’re laughing, decide whether to laugh in return, and choose to reciprocate with either a chuckle or a giggle.

Chuckle, Snigger and LOL. Curious Cases Series 23. ... Why do we giggle, snort, and bust a gut laughing? Is it just humans being weird, does it serve some higher function or do other animals crack ...