Yobbo is a word used to describe someone who behaves in an impolite or rowdy way. It's like when a little kid doesn't listen to their parents and throws a tantrum in public - that's being a yobbo. Sometimes people who are yobbos might use bad language or act aggressively, which is not very nice. It's important to always be respectful to others and treat them how you would like to be treated yourself. So, being a yobbo is not a good thing, and it's better to be kind and considerate.