Green’s Dictionary of Slang

stick of chalk n.

[rhy. sl.]

(Aus./UK) a walk.

[UK]P. Wright Cockney Dialect and Sl. 104: stick of chalk ‘walk’.
[UK]R. Puxley Cockney Rabbit.
[Aus]Pete’s Aussie Sl. Home Page 🌐 stick of chalk: a walk.