Photo courtesy of Wikimedia Commons
That would be today, right now, in fact, if you happen to be in London and near the Northern Line, drop your trousers and hop on.
I certainly won’t.
Sorry I didn’t give you advance warning, I only just found out about it a few minutes ago. I certainly couldn’t let it go unmentioned here. Organizers say, “The ride is arranged so trou-less travellers board the train at different stops, creating the illusion of a bizarre coincidence for unaware civilians.”
Ah, those Brits. So quirky.
expatrimummy 
I’d never even heard of this! I was on the tube on the 10th – guess I was lucky to miss it! 😉
That was a lucky escape, I’d say!