Yellow phlegm is normally a sign of an infection, or a case of the common cold. Greenish or brownish phlegm is nearly always a sign of infection. Greenish or rusty phlegm or phlegm with rusty spots can also be a sign of pneumonia. Coughing up brown phlegm is also a common symptom of excessive smoking.
A flowboard is a variation on a skateboard, combining aspects of surfing, skating and snowboarding.
OSB is easily identifiable by its characteristic wood strands. Oriented strand board (OSB), also known as flakeboard, sterling board and aspenite in British English, is a type of engineered lumber similar to particle board, formed by adding adhesives and then compressing layers of wood strands (flakes) in specific orientations. It was invented by Armin Elmendorf in California in 1963.