A person who drives abnormally close to the curb.

Generally the elderly.
Bill - Slow down, It looks like that cars gonna park.

Ted - Nah, It's just a gutter runner.
by Mr Skim October 29, 2009
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Somebody who runs John Gutter within Pizza Tower.
"Oh, you run John Gutter. You Gutter Runner. You're never beating that 1:23."
"I Will!"
They never did.
by CattleAwesome February 22, 2023
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