The reason Pringles fit so nicely in a cylindrical tube is because they're hyperbolic paraboloids plotted over a circular domainpic.twitter.com/BUzjPw7e17
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
The real reason for the shape: It changes the aerodynamics of the Pringles, which means they can run the production machinery significantly faster.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.