Can You Watch This Video Without Laughing?

Nikki Barr

You know those moments when one of your friends starts laughing and you end up in can't-breathe-please-make-it-stop hysterics for hours on end at absolutely nothing?

And then somebody snorts and it carries on even more? Yeah, that.

Well, it turns out this isn't just reserved for lolz between BFFs, it can even happen on a busy commuter train.

This clip proves just how contagious laughter can be, especially when you have no idea what you're laughing about - and it's a total instant pick-me-up.

P.S. Watch out for the one woman who gets freaked out by the whole thing and moves down a carriage. Lolz.

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