Bleeping in South Park

Yes, the bleeping is there as a  joke.  It's nothing new, really.  Monty
Python did it on their Contractual Obligation Album with the song, "Bet you
won't play this song on the radio":
I bet you they won't play this song on the radio
I bet you they won't play this new <beep> song.
It's not that it's <beep> or <honk>  controversial,
It's just that the <kling>ing words are awfully strong.
   You can't say <arooo> on the radio,
   Or [whiplash] or [knife hits door] or even <aaargh!>
   You can't even say: "I'd like to <crrrr> you some day."
   Unless you're a doctor with a very large <bwoing>.
SO I bet you they won't play this song on the radio,
I bet you they'll <PING>ing re-program it.
I bet you the [cash register]ingal program directors
Will think it's a load of horse<pblrffft>

Also see Pinkard and Bowden's "Censor Us" on their album "Cousins, Cattle and Other Love Stories." On Warner Bros.