Secrets: What do you do on purpose to upset someone?!

What do you do on purpose to upset someone?! “When my mother-in-law brings up having kids/grandbabies, I always correct her with “kittens” or “grandkitties”. Makes her so mad lol, leave me alone!” “Living, I guess, to annoy my teenager.” “I do mocking impressions of my wife and they drive her up the wall!!”