Internet culture question

[annabtg]

You know that line format that's used in icons, LJ comments etc., and goes something like: "IM IN UR [something] [whatever]IN UR [stuff]Z"?

Where does it come from?

I first saw some icons with this format (I distinctly remember an icon with a picture of a cat in a fridge, and the caption "IM IN UR FRIDGEZ EATIN UR FOODZ" or something like that), then noticed it's a relatively common line format. For some reason, I find it really funny.

I was just reminded of it thanks to a post on mock_the_stupid. Read the post, then scroll down to read the comments. Particularly the one with that format - the one I replied to. It almost killed me with laughter.
(I made an icon with it, too! It's in my second comment - and uploaded in my userpics :D)

So... does anyone know?

Thanks,
Anna.

Comments

[un-sedentary.livejournal.com]

It's from some stupid game where someone said, "m in ur base killin ur d00dz" and everyone started imitating him. I was wondering too until someone asked in a community.

[annabtg.livejournal.com]

A-ha! Thank you, Julie! *gives cookies*

See ya,
Anna :)

[cant-talk-pizza.livejournal.com]

Oooh, thank you! ^_^