1. A combination of nice boobs and an exposed thong that hangs out of the top of the pants of a hot woman while bending over or when wearing low rise jeans.
2. When there are two or more hot women with a combined mixture of an exposed thong and nice boobs. All women must be hot or this negates the thong boob convergence.
Man! Can you believe how awesome Jill's boobs are or how Amanda's thong is always showing in those low rise jeans? Its like we got thongs and we have boobs ...we got Thoobs.