The meaning of "stir the pot" is:
The definition of "stir the pot" is:
(verb) to enjoy causing trouble for others
A: Your girlfriend is ugly!
A: I said, your girlfriend is ugly!
B: Do you want to fight?
B: Why are you stirring the pot?
The policeman arrested my son because he stirred the pot by arguing with the police.
My younger brother always stirs the pot by getting into arguments with my parents.