Literally. Guy stands too close to train to take a selfie. Conductor warns him with the horn, then gives him a workshoe in the brainpan.
The internet is doing what it naturally does: first, there's the excruciatingly long 9 seconds edited down to its pith in GIF form:
And then the frame grabs for detailed study. Before everything went south, he's preparing for a selfie - a Vine, I'm guessing.
The Boot of Doom enters the frame:
Contact, with some chin-rippling:
An almost contemplative moment:
Sudden transformation into an aging British rocker:
And brief stint as an Edward Norton impersonator: