We went to a cafe and witnessed the mother of all temper tantrums by a little kid who wanted a cupcake (3 years old or so). He was screaming bloody murder. The dad was making every parenting mistake in the book, arguing with the kid ("well you're not going to get a cupcake!"), chasing him around the tables, and did he remove the child from the cafe? No. He let him scream and then finally bought the damn cupcake.
My H looked like he'd seen a ghost. He was seriously pale and looked frazzled, lol. I told him I was sure he was going to be a much better dad than that so he shouldn't worry too much.