I don't get it. What's amazing about it, and what does it have to do with T-Mobile?
Oh there's an abstract connection, probably. But I agree they could have slapped a diarrhea tablet logo at the end and it would make as much sense.That had nothing to do with cell phones/ T-Mobile.
You see, that would really annoy me. (I also presume that it was a 'fake' flashmob anyway).
That's the last thing I would want whilst waiting for my train.