The fantabulous London fanzine/magazine/peculiar (whatever), Smoke, is finally out in some shops and aside from my mate Mecca's feature about Neil Gaiman's Neverwhere and its parallels to real life on the tube (cheers for the site check) - there's a massive London Transport theme in this issue. Haven't had a chance to read the whole thing, but buses feature very heavily (bus journeys, messages written on steamed up bus windows, disappearing buses, bus of the month - my God, Jag will be in heaven)
Under a "Why Some of London's Best Jokes Aren't Actually Funny" heading we have the following joke and the wonderfully literal explanation as to why it isn't funny, which could have almost been written by some of the people who comment in this blog (you know who you are).
JOKE 'Excuse me driver, is this a Wapping train?'
'No, Madam, it's the same size as all the rest, otherwise it wouldn't fit through the tunnels.'
WHY IT ISN'T FUNNY (you need to adopt a purposefully nasal voice when saying this and get out a flash of tea)
"Because the tunnels on the East London Line are actually built to more generous proportions than most on the underground system, in order to accommodate full-size rolling stock."
By the way, don't take my word for Smoke's excellence. Diamond Geezer, who highlighted its existence to me in the first place, is still waxing lyrical about it.