出洋相,中文俗语,意思是指在人前出丑,闹笑话。与英文习语make an exhibition of oneself意思相近,表示to behave so foolishly in public that one excites notice or ridicule。

例句:

他在结婚典礼上喝醉了,在众人面前出了洋相。

He got drunk at the wedding and made an exhibition of himself in front of everyone.