walk the chalk

A ballcarrier that straddled the sideline during a run would "walked the chalk stripes".

I will have to make sure that I cross the 't's, dot the 'i's and that I walk the chalk line.

Walking the Chalk (1838), oil on canvas, Houston Museum of Fine Arts

When our hired girl 'tends like she's mad, An' says folks got to walk the chalk When she's around, er wisht they had!

In 1990 he co-produced (along with Phil Greene) "What's in A Name" for Florida band Walk the Chalk.

Walking the chalk hills of the Lincolnshire Wolds or marvelling at the wildfowl, seals and dolphins from the flats and marshes of the Solway Coast.