Chinese languages

chū yáng xiàng
出洋相
Making a laughingstock of oneself
Words or deeds seem ridiculous and funny; make a fool of oneself.

Example: 我在会上出了洋相。
I make a fool of myself at the meeting.

this slang doesn't only have the Derogatory meaning
sometimes if use this slang for a child it means that the child is clever and naughty