Slapstick is a style of humor involving exaggerated physical activity which exceeds the boundaries of common sense.
The name "slapstick" comes from the Italian language word batacchio or bataccio — called the "slap stick" in English — a club-like object composed of two wooden slats used in commedia dell'arte. When struck, the batacchio produces a loud smacking noise, though little force transfers from the object to the person being struck. Actors may thus hit one another repeatedly with great audible effect while causing very little actual physical damage. Along with the inflatable bladder (of which the whoopee cushion is a modern variant), it was among the earliest special effects.
Slapstick comedy's history is measured in centuries. Shakespeare incorporated many chase scenes and beatings into his comedies, such as in his play The Comedy of Errors. In early 19th century England, pantomime acquired its present form which includes slapstick comedy, while comedy routines also featured heavily in British music hall theatre which became popular in the 1850s. British comedians who honed their skills at pantomime and music hall sketches include Charlie Chaplin, Stan Laurel, George Formby and Dan Leno. The influential English music hall comedian and theatre impresario Fred Karno developed a form of sketch comedy without dialogue in the 1890s, and Chaplin and Laurel were among the young comedians who worked for him as part of "Fred Karno's Army".