Shit stirrer British impolite slang
Someone who takes pleasure in causing troubles or problems for others, especially by exposing facts that are preferred to be kept secret.
A: You know you don't have to tell her that and make her sad, right? B: But it was funny, don't you think? A: No, it wasn't. You're such a shit stirrer!
I can't believe you're hanging out with Dan. He is a shit stirrer who can't just keep his mouth shut.
Used to describe a person who is foolish and stupid
This phrase is dated from the late 19th century.