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Another name for watermelon, according to the Bluesbrothers.
See also cool water sandwich.
Not to be confused with the cool water sandwitch, a single serving of cold beer.
1. "I had a coolwater sandwich and a Sunday-go-to-meetin' bun"

2. I ate many coolwater sandwiches to beat the summer heat.
by Sd70mac December 12, 2011
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