I seem to be viewing this website in British English.pic.twitter.com/cFMfIu3nFi
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
[he starts scouring the Internet for translation of previously-unknown gesture...]
Well, you can just ring up the 10th Doctor and ask him about it, right? Don't all British people know each other's personal numbers?
This is all starting to sound like popular culture to me... and I'm way out of my depth...
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.