It happened yesterday. Burger King's Twitter feed was hacked by a prankster, its banner replaced with one advertising rival McDonald's new Fish McBites and a phrase announcing that the company "Just got sold to McDonalds because the Whopper flopped."
After the account with over 85,000 followers was hijacked, messages with obscenities were posting from it until Burger King had Twitter take the whole thing down.
McDonald's responded on Twitter, saying "Rest assured, we had nothing to do with the hacking."
The Twitterverse was chirping after the break-in, but perhaps the best was this tweet from @fibblesan: "Somebody needs to tell Burgerking that 'whopper123' isn't a secure password."