Weird, inside-jokes like "All Your Base Are Belong To Us" remind me of some of those cartoon shows on "Adult Swim". They're not for everyone and if you get the joke, it's a pleasant 17 seconds spent in the office (and another 10 minutes forwarding links to friends.)
So now the LOLcats unleash their wide-eyed, furry fury on the 'net.
Lolcat images consist of a photo of a cat with a caption characteristically formatted in a sans serif font such as Impact or Arial Black. The image is, on occasion, photoshopped for effect. The caption generally acts as a speech balloon encompassing a comment from the cat, or is a simple description of the depicted scene.(From the Wiki)
If you were a Fark.com visitor a few years ago, you would have seen the source of this joke: the "please spare the kitty" photoshopped picture. (And you also know the context of that punchline ;))
So anyway, here's a site dedicated to LOLcats. Some images are very funny ("wuz dat noisez?") and some are just "meh".
And there's your 17 pleasant seconds.