It's World Tourism Day - So how to confuse tourists on public transport

When did seafood become currency in the UK?

I really hate sloppy language and the London Underground and railway temporary signs seem to be masters at it.

Seen yesterday at my local station:



Can you seriously see any outlet apart from possibly Rick Stein's restaurant in Padstow accepting oysters as currency? Are they Oystercards or Oysters? And we wonder why tourists look so clueless! Happy World Tourism Day! Nice to see London Transport doing their bit.