Professor Booty by the Beastie Boys. Killer rhymes from Mike D:

You’ve got the boomin’ system but it’s blasting out doo-doo,
You think it’s chocolate milk but it’s watered down yoo-hoo

…and MCA:

So many wack M.C.s, you get the T.V. bozack,
Ain’t even gonna call out your names ‘cause you’re so wack,
But one big oaf whose faker than plastic,
A dictionary definition of the word spastic