I've occasionally gotten a CD stuck in the slot on my laptop but just above (or below) the actual CD slot. I don't even remember how I managed to get those out, but I know it was difficult. But it sounds like this isn't what's happened with you.

All I can suggest, short of taking it into the shop or -- DO NOT TRY THIS AT HOME -- giving the laptop a good whack -- is to shut down the computer and restart. Shut down, restart, rinse, repeat several times.   

If that fails, ask Amos. He's a Mac geek.