Where's the beef? What's the deal with marijuana? Why does this read like a '90s stand-up script? The answer to at least some of these questions can be found in the quiz. Were you paying attention?

Nickelodeon's megahit show SpongeBob SquarePants made its TV debut on May 1, 1999. Fans of the cartoon span generations and the animated series has become a multibillion-dollar franchise.

A photo of a real-life sponge and starfish hanging out together delighted the internet. But "the reality is a little crueler than perhaps a cartoon would suggest," says the researcher who posted it.