I pasted the text in the box and it came back, telling me I had 49,997 words. I edited again, pasted the text once more and added "this is the end" at the bottom (four words, yes) and the validation widget counted and said... that I had 50,000 words.
Clearly something weird with the validation tool, but I'm so not complaining.
I'm now going to bed. Whether I make it to the office or not tomorrow is anyone's guess.
Superman: Why is it that good villains never die? Batman: Clark, what the hell are good villains? => Superman/Batman: Public Enemies