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Literally - "race bread roll"

Figuratively - The German language equivalent of a rice burner or "tricked out whip". Usually used to denote a hatchback or small automobile with tasteless street racing modifications. Popularized by upper-crust BMW drivers exercising their Autobahn elitism.

Check out that VW Polo with the huge ass wing and exhaust What a fugly rennsemmel, I bet it only makes 50 whp...
by jibkid February 27, 2008
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