American humor refers collectively to the conventions and common threads that tie together humor in the United States. It is often defined in comparison to the humor of another country – for example, how it is different from British humour and Canadian humour. It is, however, difficult to say what makes a particular type or subject of humor particularly American. Humor usually concerns aspects of American culture, and depends on the historical and current development of the country's culture. The extent to which an individual will personally find something humorous obviously depends on a host of absolute and relative variables, including, but not limited to geographical location, culture, maturity, level of education, and context. People of different countries will therefore find different situations funny. Just as American culture has many aspects which differ from other nations, these cultural differences may be a barrier to how humor translates to other countries.
One leading analysis of American humor, the 1931 book American Humor: A Study of the National Character by Constance Rourke, identified the character of the "Yankee" as that first American comic figure, the first widely accepted American character that the nation could find funny, make fun of and even export for the amusement of the world – a gangly traveler who told stories, played elaborate practical jokes, was ingenuous, sly, perhaps uneducated. She reports that American comedy sprang forth after the American Revolution, when the country was "freed from the worry of self preservation" and its citizens began to regard themselves as "works of art".
American humor might also be distinguished by its most common type of humor, for example, more slapstick and physical comedy. There is less emphasis on understatement, and so the humor tends to be more open, rather than satirizing the social system through exaggeration.