It is a reference to the moral of the story The Pied Piper of Hamelin presented in an e-text (free) at the link for your cultural enrichment. Many of us old farts heard/read the story numerous times in our youth.
85 posted on 07/15/2010 9:33:25 PM PDT by Smokin' Joe
(How often God must weep at humans' folly. Stand fast. God knows what He is doing.)