Robbie, the song you are thinking about is "Mama Don't Allow."  Drives
you nuts when you don't know what the song title is, doesn't it?

Mama don't allow no (insert what mama doesn't allow), repeat it twice,
and then Well, I don't care what Mama don't allow, etc., etc.

Tony Marsico

  [ Actually it wasn't Robbie who couldn't remember the tune title.
  [ Robbie and his wife Carole are away travelling through Sunday.
  [ I'm sure he would have identified the tune instantly.  The odd
  [ thing is all of the variations in what Mamma won't allow that the
  [ other replies here mention, and also the fact that nobody seems to
  [ know who composed the tune.
  [ -- Relief Editor.