What do Britney Spears songs, cigarettes, and Harry Potter all have in common?

They're addictive.

Britney Spears songs- whether you want them to or not, they get stuck in your head and sooner or later you like them. It just happens. Don't deny it. The only song that hasn't grown on me like her others is "Circus," but I still know the whole chorus. For a really fun song look up "Shattered Glass" its hilarious because of its melodramatic tone, but incredibly catchy nonetheless.

Cigarettes- I'm absolutely anti-smoking and have never smoked a cigarette. Enough said.

Harry Potter- what book series has done what Harry Potter has done? I'd argue no series has come close to the mania of Harry Potter (Twilight also has a crazy fan base, but those books aren't nearly as well written, Lord of the Rings is well written but doesn't have as large of a fan base). These books are great and EXTREMELY hard to put down. They're carefully crafted, and a great mixture of drama and comedy. What started out as a children's series has turned into a global phenomenon. Unlike many fads Harry Potter stands the test of time and is a craze worth getting into