Because yes, Quarks have the right to be cute and illiterate too.
After lolcats, lolruses and other crazy animals, here comes lolparticles. I am pretty sure this announces the end of the world. (start buying your shotguns people!)
Anyway, for those not familiar with particle physics (but who can really be familiar with particle physics anyway?) here is the wikipedia article on the matter (ahah).
Or... You can go watch this amazingly nerdy and awesome song.
"Up, Down, Strange, Charm, Top, Bottom, I you don't know what a quark is it doesn't matter, you still got 'em!"