While I'm on the subject (London Underground),
there's a game in town which aim is to guess animals shape by reading the London underground map. I heard about that last year may be and didn't give any attention until I found myself (thinking of) spotting a kind-of animal-ish shape while looking at the map.
Of course I dismissed such a though instantly blaming the usual suspects (tiredness, end-of-the-day-syndrom, drunken-state, put-your-own-excuse-here,...)
And then I found this web site.
Ok, am I reinsured?
let's say yes, it's so more fun that way.