ソッコー(finishing something) suddenly, abruptly

生徒(せいと)：「授業(じゅぎょう)が終(お)わったらソッコー帰(かえ)るぞ！」

Student: 'As soon as the class is over, I'm immediately going home!'

高校生(こうこうせい)：「大学生(だいがくせい)になったらソッコー彼女(かのじょ)を作(つく)るぞ！」

High School Student: 'As soon as I become a college student, I'm going to get a girlfriend!'

弟(おとうと)が兄(あに)に：「お前(まえ)の背(せ)なんかソッコー抜(ぬ)いてやるからな！」

My younger brother said to his older brother: 'I'll quickly surpass your height, just watch!'

上司(じょうし)が部下(ぶか)に：「ミスをした時(とき)はソッコー私(わたし)に知(し)らせなさい。いいね？」

The boss says to his subordinate: 'When you make a mistake, notify me immediately. Got it?'

悪事(あくじ)を上手(うま)く隠(かく)せたかと思(おも)ったが、ソッコーバレて痛(いた)い目(め)に遭(あ)ってしまった。

I thought I had successfully hidden my misdeeds, but I was suddenly exposed and ended up in trouble.