A hacker with a sense of fun hijacked Dallas's tornado sirens during a test, making them play the classic theme from SpongeBob SquarePants. Nobody knows who did this or why, but the internet loves it.

Beyoncé. Prince. Rihanna. Madonna. These world-famous, single-named superstars have all performed at the Super Bowl, and this year they’re joined by another generation-defining artist: SpongeBob. This ...