Itchy/tight/lose/wrong-color pants/shirt/dresses/socks/shoes, not wanting to eat breakfast, decided they wanted a different breakfast after it's served, deciding they wanted to get the milk out of the fridge after telling you to do it, not wanting to brush their teeth/hair, wanting to use a different bathroom, insisting they don't need to potty while doing the peepee dance, needing to pet the cat before anything else, wanting to eat at the counter or on the porch or at the table.
There's no negotiating with terrorists.