CDC: How to survive a zombie apocalypse

The warning appeared on the CDC's "Emergency Preparedness and Response" blog this week.

It cites the rise of zombies in pop culture as raising the possiblity of a real zombie apolocalpyse but goes on to provide real tips to deal with a real natural disaster, like stocking up on food, water, and supplies.

The tongue-in-cheek warning went viral on social media sites, causing a portion of the CDC website to crash Thursday.

CDC doctors say they were trying to reach the younger, tech-savvy demographic that's usually hard to capture.