A strange 'net-speak construct is the expression of the form "IM IN UR x, yING UR z". One example is "IM IN UR BASE, KILLING UR DOODZ". It's usually written in capital letters and the words are usually written in the mispelled manner of instant-message shorthand.
Combine this popular internet sentence construct with the popular internet photo topic of cats, and you've got the hot meme for the coming year!
Here's an animation showing the meme in action. It's about 1.2 megs in size, so you might have to wait a tiny bit. Click the photo below to see it in its full glory:
