put your oar in
插手或干预他人的事务
口语·表达不请自来
英文释义
to interfere or meddle in a situation or conversation, often unwelcome or without invitation
例句
He always puts his oar in when we're discussing private matters.
典故来源
源自划船比喻，原指未经邀请就插入船桨，引申为多管闲事或干预他人事务。