I just got back from taping a PSA.  It'll be aired (we hope!) on local
college radio stations, and perhaps late night on some more mainstream
stations.  Each line is spoken by a different voice:

I can do it for an hour and not get sore.
We love to do it in bed.
I did it with two girls at once.
At first my mother said I shouldn't do it, but when she watched us she changed
  her mind.
We do it at the movies.
I can walk and do it at the same time.
I read while I do it.
The longer we do it, the healthier we both are.
It's one of the most satisfying things I've ever done.
He's short and fat and nearly bald...
Yeah, and he's really good at it.
Breastfeeding.  Everybody's doing it.
Brought to you by the Ithaca Breastfeeding Coalition.

Diane Wiessinger, MS, IBCLC, LLLL  Ithaca, NY