Giant Floating Baby Head

The Giant Floating Baby Head extension makes a baby head randomly cross the browser window for any site.
It's a great prank to install on someone's Chrome who's a fan of "Phineas and Ferb." Never heard of it? Check out:
http://phineasandferb.wikia.com/wiki/Giant_Floating_Baby_Head

Want an image other than the Baby Head? Select your own image on the options page. It could be Worf, a Creeper, Donald Trump, etc. The possibilities are endless.

The Giant Floating Baby Head appears at random (every 10-40 minutes after opening a new tab), or according to the settings set on the options page (open Manage Extensions, click on the 'Details' button for the extension, and select 'Extension options').
You can also trigger the appearance manually by pressing Ctrl+Shift+F (configurable) on almost any webpage! (Chrome restricts it from running on certain pages.)

Updates:
0.7 - Supports multiple user-defined image URLs
0.10 - Configurable keyboard shortcut
0.12 - Configure which websites the GFBH should not appear on
0.14 - Configure duration

Make sure to check out the options page. More settings and options coming soon!
Please rate and comment! Let me know what options/improvements you'd like to see and let me know if you encounter any bugs.

Permissions:
"Read and change all your data on the websites you visit" - GFBH doesn't read any data from the sites you visit. This permission just allows GFBH to display on any website.

Note: This extension is not endorsed by or affiliated with "Phineas and Ferb" or "Disney Channel".