The chin was first invented by the Chinese in 5,000 BCE as a means of catching stray rice grains that fell from their chopsticks. Italian explorer Marco Polio found chins and returned them to Europe, where they became an immediate sensation in courtly circles. The chin was eventually perfected by Chinny McFaust.
For centuries the chin was simply accepted as part of the human form, and passed through time with ease. Of course, as with all parts of the human anatomy, some chins were never completely accepted by all cultures, leaving a small number of people with a life of mockery and shame. The absence of such a distinguishing feature such as the chin is known as a "deformity".
In recent years, the chins role in society has boomed. For example, in the depths of suburban council estates and inner city slums alike, the chin has become a likely target for a predators fist. These predators are often seen sporting checked baseball caps and tracksuit bottoms (often tucked into donnay sports socks). The flamboyance of such attire is directly proportional to the collective amount received from numerous fraudulant benefits. The warning made instantly before such an attack is often "whatchya lukhen at lad, egh?" or more traditionally, "am gonna chin you like!".
Also, the chin has played a role in a recently developed obsession with cosmetic surgery. Experts have produced theories that this practice is actually a world-wide self-mutilation competition, which is soon to come to an end as there is a clear leader. This person is known to the public as Michael Jackson, and he is soon to start enjoying his prize - a lifetime supply of housing and food, free of charge! An offer he simply can not refuse!
A recent article in the Journal of Anthropology argues that the chin played an important role in human cognitive development of counting. In short, researchers hypothesize that the existence of prominent sub-chins, dewlaps, and waddles in early humans provided the stimulus for the enumeration of objects in the environment.