When a comedy partner behaves eccentrically, the straight man is expected to maintain composure. Whatever direct contribution to the comedy a straight man provides, usually comes in the form of a deadpan. A straight man with no direct comedic role has historically been known as a stooge. Typically he is expected to feed the funny man lines that he can respond to for laughs (and is hence sometimes known as a feed), while seeking no acclamation for himself. If a straight man unintentionally breaks composure and laughs, it is known in British English as corpsing.
In vaudeville, effective straight men were much less common than comedians. The straight man's name usually appeared first and he usually received 60% of the take. This helped take the sting out of not being the laugh-getter and helped ensure the straight man's loyalty to the team. Abbott and Costello, one of America's most popular comedy duos of the 1940s and 50s in radio, film and television, began as nightclub performers when the straight-faced Bud Abbott contrasted against the bumbling Lou Costello; Abbott, unusually, allowed Costello a larger paycheck to keep him on the team.
Despite the usual name, women can fulfill an equivalent role, although they are often described as a "comedic foil". Examples of noteworthy female foils include Margaret Dumont, who often performed with the Marx Brothers in their films, Bernardine Flynn up against Art van Harvey on Vic and Sade, and Pam Dawber, who performed with Robin Williams on the television series, Mork & Mindy.
The role is still found today in sitcoms.
The idea of the comedy team afforded another type of humorous conversation, with one party adopting the role of the "straight man" and the other as the "funny man." The best known of these teams was Burns and Allen. The key to their humor was George Burns' timing and Gracie 's dizzy responses to Burns' questions (i.e. George Burns and Gracie Allen). The sexist role of the batty woman, as seen through Gracie's perceptions, borders on madness and sheer child-like wonder and presents a new role that would be homogenized in the character of Lucille Ball.