laughing stock
noun [ S ] uk/ˈlɑː.fɪŋ ˌstɒk/ us/ˈlæf.ɪŋ ˌstɑːk/
笑柄，笑料
someone or something that seems stupid or silly, especially by trying to be serious or important and not succeeding
Another performance like that and this team will be the laughing stock of the league. 如果下一场比赛表现还是那样，这支球队就会成为联赛的笑柄。