A better question would be what slang terms I DON'T hate. Slang is butchering the English language! What the hell did English EVER do to you?! WHY DO YOU TRY TO KILL HER?! SHE'S INNOCENT! LEAVE HER ALONE!
...Sorry. But in case you can't tell, I REALLY hate slang. Mostly, I hate slang that is derived from slang the most. For example: What's up? is a slang term. However, it's become sort of ingraved into English and is acceptable now. Except now, people don't ask what's up anymore. It's Wazzap? or 'Sup? or Whatup, G?
Oh, and Internet slang must die and it must die NOW. "I see" is NOT spelled "IC." A fit of laughter is NOT pronounced "lol." A better way to put it would be "hahaha."
So, do yourself and the world a favor. The next time you hear someone say "fo shizzle" or any other term, beat them in the face with a shovel. You have my permission to beat them with sticks. We won't prosicute. You'd be doing us all a favor. (And a cookie goes to whoever can name where those last few lines came from.)