Small talk is like when you say hello to someone and then start talking about things that are not super important, like the weather or what you did over the weekend. It's a way to be friendly and start a conversation, even if you don't know the person well. Small talk is usually not about big, serious things like politics or religion, it's more about little things that everyone can relate to. Think of it like when you meet someone new at school or a party and you want to get to know them better. You might start with small talk so you can both feel more comfortable talking to each other.