All the parents of this world know that toddlers are ready to stage a completely hysterical meltdown over just about anything. It could be that penny that they discovered in a drawer around the house that they wanted to eat. Or maybe, it's because you told them that they have to wear a shirt. If anything, it's insightful lists like these that could ultimately end up convincing some people that they absolutely don't want to do the whole parenting thing.