CNN's use of the phrase "raising eyebrows" has been raising eyebrows over here at CollegeHumor. There's no news yet about why eyebrow raising is worthy of reporting on, or exactly how high the brows must be before being considered "raised," or why nonsense fluff, serious issues, and completely acceptable things are equally as likely to be met with "raised eyebrows," but we assume that CNN will eventually answer all these questions because their journalistic standards are higher than even our eyebrows.

Here's 20 things that CNN believes raise people's eyebrows.

1. Bahrainian Death Metal Bands

In "Twidiots", we collect the choicest thoughts on a particular topic from Twitter's millions of users.

During a visit to the Anne Frank House in Amsterdam on Friday, Justin Bieber wrote in the official guestbook that he hoped the young holocaust victim "would have been a belieber." Most of Twitter reacted with disgust, but some of Bieber's most… devoted fans took his side. But who knows? Maybe they would have reacted differently if they'd, you know, _heard of her.

In the early 1900's, American hobos developed a set of shared secret symbols they used to let fellow bums know what to expect from the residents of any town they drifted into. Now, in the 21st century, the code has been revised so that sh*tty college kids can exploit the kindness of their dorm mates. Keep reading to learn the secrets of the HoBro Code!