Play-Doh, that salty treat for children, was originally developed as a wallpaper cleaner.

The word "denim" comes from Nimes ("serge de Nimes"), while the word "jeans" is thought to derive from Genoa ("bleu de Gênes"), where it originated and whose sailors wore the tough denim trousers.

From the north pole to the equator, there are 90 degrees of latitude. From the equator to the south pole, there are again 90 degrees of latitude. Thus the earth is 180 degrees of latitude from north to south. The flat lines are the lat lines.

A Nebuchadnezzar is a bottle measurement equal to twenty standard bottles of champagne. Larger sized bottles are rare, but they exist.

The origin of the name of Seoul is probably derived from an old Korean word, seo'ul, meaning "capital city." Or perhaps it is an abbreviation of Seorabeol, a name for an ancient local capital. The exact origins are uncertain. An alternate name, Gyeongseong, also means "capital city," and that doesn't seem akin to "Seoul" at all. Hmmm.

Sriracha hot sauce is named after the Thai city of Si Racha. It is also known as rooster sauce because of the bird on the bottle.

Fighting Falcon

The F-16 is a jet, designated the Fighting Falcon, used by the US Air Force since 1974. Despite officially being the Falcon, it is also known by some pilots as the Viper.