an egg's age

English edit

(US, slang, dated) A very long time.
- 1922, Thomas Lansing Masson, Our American Humorists, page 201:
  Nothing about my natural charms no more, an egg's age since anybody had called me to 1 side and whispered "I got a T. L. for you. Gertie thinks your ears is immense."
- 1928, New York Herald Tribune Books, volume 4, numbers 1-11, page 21:
  As entertaining a book as you will find in an egg's age.