Justin Bieber has rabies?

Uh, no.

Type that into Google, though, and you'll get links to a video parody, a spoof on Bieber's "Baby."

When it comes to Justin Bieber rumors, rabies would be a mild one.

On the Internet, strange, occasionally mean, rumors and speculation about him are as popular as the music videos. Here are a few of the most outrageous ones:

•Justin Bieber has syphilis. Started by the online community 4chan, which pushed "justin bieber syphilis" to the top of Google trends.