this track is too fun not to share. this a cappella version came out right around my freshman year of college. for a long time, it was only available on the bad cassette. yeah the cassette. my best friend, katie, and i played it all the time, and searched high and low for it in a format that wouldn't require rewinding, and rewinding, and rewinding. (plus, back then, you were wise to have back-up copy of your favorite songs, a pristine record or multiple copies of the tape.)
i still haven't seen it on any cd, but i'm sure its available somehow, somewhere.
enjoy.