The most convincing explanation is that when someone is finding it difficult to understand what is said to them, he/she engages in a form of lip-reading: he/she will observe the lips of the talker and mimic the talker's lip movements.
Lake Tanganyika is an African Great Lake. It is estimated to be the second largest freshwater lake in the world by volume, and the second deepest, in both cases, after only Lake Baikal in Siberia; it is also the world's longest freshwater lake.
Located on the border of Peru and Bolivia is the largest freshwater lake by volume in South America, Lake Titicaca. With an elevation of 12,507 feet, this million year old lake is also one the world's highest commercially navigable lakes. All along the shores are native villages where traces of their ...