get (hold of) the wrong end of the stickBritish EnglishBrE informalUNDERSTAND# to understand a situation in completely the wrong way 完全误解 People who think the song is about drugs have got the wrong end of the stick. 有人认为这首歌是关于毒品的,这些人完全误解了。
→ get (hold of) the wrong end of the stick at stick2(2)