"Blue comedy" is a type of comedy that uses naughty or inappropriate language and topics. Think about when grown-ups tell jokes that make you feel like you shouldn't be listening because they are talking about things you don't fully understand yet. They might use words that you aren't allowed to say yet or talk about topics that your parents might not want you to hear about just yet. That's what blue comedy means. It's like telling a joke that you know is a little bit bad, but it's funny anyway. It's important to remember that while some people might find it funny, it's not always appropriate for everyone to hear. So, it's best to wait until you are older to hear this type of comedy.