喝倒彩

Also known as boo

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.