Top Definition
Road Bicycle enthusiast who becomes obsessed with subtracting weight from his bicycle at all costs, including overriding safety concerns and practicality. A Weight Weenie will always replace a 100 gram component with a 99 gram component regardless of all other factors, including cost, durability, and overall design and functionality. Materials that are commonly used in the pursuit of lightness include: aluminum, carbon fiber, composites, and titanium.
Your bike weighs only 8 pounds, you must be a total Weight Weenie !
by Titanium Frame Builder October 26, 2007

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