Selfies have been blamed for body image issues. Selfies have been used to raise money for cancer. A selfie can help Hollywood A-listers unseat Obama on Twitter.
Selfies are so insidious even the pope can't resist them.
But here's a selfie that will want you reach for every cliché in the book related to Darwin's theories of natural selection.
A man decided for reasons known to himself that a selfie was needed as near an approaching train as possible. A conductor on the train decided the man had crossed the line.
Watch the 11-second video to see what transpires.