on the wagon vs straightedge

on the wagon

prep
  • Abstaining from drinking any alcoholic drink, usually in the sense of having given it up (as opposed to never having partaken); teetotal. 

  • Used other than figuratively or idiomatically: see on, the, wagon. 

  • Maintaining a program of self-improvement or abstinence from some other undesirable habit. 

straightedge

noun
  • A flat, rectangular tool used to draw, cut or check the straightness of straight lines. 

adj
  • Living one's life opposing or eschewing the use of substances such as alcohol, tobacco, and drugs. 

How often have the words on the wagon and straightedge occurred in a corpus of books? (source: Google Ngram Viewer )