baby boy vs spring chicken

baby boy

noun
  • A very young male human being, from birth to a couple of years old. 

  • A term of endearment for a man. 

  • A man who is immature or infantile. 

spring chicken

noun
  • A person who is still young. 

  • A chicken for eating while it is still young. 

How often have the words baby boy and spring chicken occurred in a corpus of books? (source: Google Ngram Viewer )