make a fool of 出了洋相
A：I could kick myself, really.B：What happened?A：I made a fool of myself at the class meeting.B：Oh, cheer up! Nobody will laugh at you.A：我真想踢自己几下。B：发生了什么事？A：我在班会上出了洋相。B：没什么！高兴点，没人会笑你的。
