curber
n.— «Unlicensed motor vehicle dealers are commonly referred to as “curbers,” usually operating from their homes, and collectively represent hundreds of millions of dollars in vehicle sales each year. The public has no protection from these individuals.» —“Self-proclaimed ’hobbyist’ convicted as illegal car dealer” in Burnaby, British Columbia CNW Group June 19, 2007. (source: Double-Tongued Dictionary)
Further reading
When she was a child, Chris from Santa Rosa, California, misunderstood the definition of the word vehicle—with amusing results. This is part of a complete episode.
Related
Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...
This is related to curbstoning.