Lake Wobegon

noun2

1. •
   (US, figurative) An idealized, close-knit small-town community.

   • There, in a setting suspiciously similar to Lake Wobegon, I’ve chronicled the feats of the incomparable John Gagliardi, head coach at Division III powerhouse St. John’s. — 2009
2. •
   (US, figurative) A situation in which everyone is thought to be above average or exceptionally successful.