Stirrer

We're out of coffee stirrers again and I'm not using my finger!

The stirrers in the chocolate factory often get chocolate all over their uniforms.

Near-synonyms: (vulgar) shit-stirrer, shit disturber, shitmonger

Why would you say something so hurtful? God, you are such a stirrer!

I heard some early stirrers in the kitchen at dawn, but I saw no reason to get up yet.

An early stirrer, by the rood!