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 This outdated phrase refers to a sobriety test in which one had to walk between chalk lines.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!
See also: chalk, walk
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.
See also: chalk, walk
Farlex Partner Idioms Dictionary © Farlex 2017
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Walk the chalk Chalkboard wall sticker, PS20, Not On The High Street Use this to scribble down the things you need to buy on your next shopping trip.
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We had to walk the chalk line, and Aunt Callie wouldn't let us even twist.
Remembering Aunt Callie and Mr. William
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