blue streak

See more synonyms for blue streak on Thesaurus.com
noun
  1. something moving very fast: They traveled like a blue streak through Italy.
  2. continuous, rapid, or interminable speech: to talk a blue streak.

Origin of blue streak

An Americanism dating back to 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018