We've all been there. You can't stop laughing at school or in the pub, and the act of trying to stop laughing is one of the funniest things in the world. The classic giggle circle.
During Sky's coverage of the Champions League yesterday, Jamie Carragher went into a fit of laughter, which Graeme Souness also found hilarious, leaving Gary Neville and Jeff Stelling alone to keep things afloat for over a minute.
And what caused Carragher's bout of laughter? Gary Neville's comments about Chelsea youngster Ruben Loftus-Cheek:
You don't want to be in a situation where you are pulling the kid off, because he can't handle it.