There’s a YouTube video making the rounds:
Lots of internet people are pretty excited about it, but commenter splendid696 asks, “Simple physics is now black magic? Are we going back to Dark Ages?” Ol’ splendid696, ever the realist. I mean, they have a point, but it’s still cool. Also I never took physics! So take that!
Personally, I’ve always been a fan of the old-fashioned shell-to-shell maneuver, but I’ll admit my success rate isn’t quite 100%. Sometimes I just get overzealous about smashing the egg and then I get shards everywhere, you know? I think I’ll give this water bottle trick a shot sometime soon, just for the hell of it.