walk the chalk
walk the chalk
To show one's competence in a particular area. This outdated phrase refers to a sobriety test in which one had to walk between chalk lines. I was so worried that I wouldn't be able to walk the chalk, but I got a perfect score on my exam!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
walk the chalk
have your sobriety tested.A traditional method of ascertaining whether someone is sober or not is to see whether they can walk along a line chalked on the ground without wobbling.
Farlex Partner Idioms Dictionary © Farlex 2017