noun. Quadriboobage minus one boobage.
Related terms: tri-boobedness, triboobular.
Real citation: "That shirt gives her triboobage."
(Aug. 23, 2007, http://community.livejournal.com/ohnotheydidnt/14883684.html)
Made-up citation: “I’ve never seen triboobage in the wild. However, on a hotter-than-Satan’s-thong day like today, when I get a restaurant-quality underwear bunch-up, I can say with confidence and horror that my nethergarments have a stranglehold on the family jewels that produces a textbook case of triballage.”