Show business terms

comedy style where the performer addresses the audience directly

informational booklet given out before a live event

thumb|Fans of the Cleveland Guardians|Cleveland Indians baseball team booing fans of the [[Detroit Tigers]] Booing is an act of publicly showing displeasure for someone or something, such as an entertainer or an athlete, by loudly yelling "Boo!" and sustaining the "oo" sound by holding it out. It may be accompanied by hand gestures such as the thumbs down sign.

sustained applause by a standing audience

right|thumb|A heckler in Washington, D.C., leans across a police line toward a demonstration of Iranians during the Iran hostage crisis, August 1980.