berserk是狂怒的，失控的。go berserk 也就是发疯、发狂、变狂暴、暴跳如雷的意思。

【例句】
My husband will go berserk if he finds you here.
要是我丈夫发觉你在这里，他会暴跳如雷。

Well, the crowd went berserk. It took security guards to restore order.
场下的观众简直气炸了，直到保安人员进场，才恢复了秩序。