A person can be referred to as a "wooden spoon" when he or she makes it their mission to stir shit left, right and center, usually by spreading lies and false rumours about others.
John: Hey, you seem to be quite upset. What's going on?
Jane: I'm furious. My sister keeps telling lies about me and my boyfriend won't even talk to me.
John: Nah, don't worry about her. She's just a wooden spoon. She'll get what's coming for her when people realise the truth.