This also is kind of on-topic: in Thailand, it is general practice to give "play-names" to your kids: Thai first names are generally chosen to be auspicious and as a consequence can be rather unwieldy, so people are almost universally known by their play-names to their parents, family, friends, workmates, passerbys, farang tourists, and in other informal situations. Common playnames include animals (so someone might introduce herself as "Ms Fish" or "Mr Pig"), plants ("Mr Tree"), objects, body parts ("Mr Testicles"), exclamations, onomatopoeia, or English words or names. Generally speaking, these play names has no real meaning, and foreigners often find it strange that someone would "playname" their daughter "Fish", say, for no real reason except that it sounds like a cute or amusing name.