Is it similar to what I saw one time where we were bidding on (fictionalized here, but close to reality) "coleman campers" and we saw thousands of impressions with just one or two clicks for the phrase "coleman campers & motorhome rvs"? Our AdWords rep wouldn't believe that anything was fishy, even though the original search query was for a type of product that the manufacturer did not even make.
Are you getting any clicks from it? Is it a reasonable query? Is it making you any money?