We've all been there: you have Watch Actresses' Survival Skills Onlinea nice bottle of beer that you'd like to drink, but absolutely no bottle opener.

What to do in this situation? Ask a stranger for help? Try and bash the cap off on a hard edge? Use your -- *shudder* -- teeth?

SEE ALSO: The bank that's apparently so cool it has become a chat up line in London's bars

Well, if you happen to be on a train -- specifically a Southern Rail train -- you might not need to do any of those things...

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Pretty good, right?

Patrick Dalton is officially the Ray Mears/Fonz of London transport.

Sadly, this may not work on every train. We're pretty sure it's only Southern Rail that has those weird little ripples in the roof, after all.

If you do happen to visit South London, though, it's surely worth an extra train trip just to test out this beautiful phenomenon firsthand.

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