noun. A ball-bot--just in time for the holidays.
Real citation: "As an experienced cyclist I'd have to recommend a lighter material for a robo-testicle; steel is just too heavy, perhaps carbon fiber, titanium or thermo plastics. This will give you a greater strength to weight ratio, but also limits your available sources of testosterone production. Call Floyd if you're looking to increase your T-E ration during training or competition."
(XJ96, Feb. 14, 2007, http://www.roadie.ca/forums/viewtopic.php?p=376&sid=f280d27e52dc827ff1e3e8b0cef1989d)
Made-up citation: "According to tradition, the robo-testicles go on last, just before you unnervingly scream, 'Arise! Arise!'"