Either the Internet is eating itself, or it's a clever Starcraft reference.

Typing "Zerg rush," into Google creates an army of Zerg-like Google-Os that destroy your precious search results. You can click the little Os to destroy them before they eat away at all of your googling. I feel sorry for anyone who is legitimately trying to find out more information about what a Zerg rush is today. You may have to hit up Bing.com if that is the case.

Here's a direct link to googling Zerg rush, in case you weren't sure how to get to Google.com.