Own goal
無意中做出對自己或自己團隊不利的事情，導致負面結果。
用于形容自毀長城或幫倒忙的行為。
英文釋義
To do something accidentally negative against your own team.
例句
His careless comment was an own goal, costing the team the deal.
典故來源
源自足球術語，指球員不慎將球踢進自家球門，導致對方得分。