Loving the responses to this. I think travel creates an alternate reality where all time and chronology is left behind at the start of the journey and the calories no longer count. Also see morning drinking in airports.
right, here's something that makes me feel like I'm still fresh off the Eurostar, 17 years on: why are British people always eating on trains? I've just boarded a train at 3.30pm, by no means a mealtime, and over half of people here are snacking - why? why do trains make you people hungry?