Okay, kiddo, have you ever heard a story that started with "once upon a time"? Well, a political myth is kind of like that. It is a story that is told to explain something about how politics works, but it's not necessarily true.
For example, let's say someone tells you that all politicians are greedy and only care about themselves. That might be a political myth. It's a story that people tell to explain why they don't trust politicians, but it's not always true. Some politicians are greedy, but others might genuinely want to help people.
Another political myth you might hear is that one political party is always good and the other is always bad. This is not true either. Both political parties have good and bad ideas, and it's important to look at each issue and decide what you think is best.
So, political myths are like stories that people tell to explain things about politics, but they're not always true. It's important to be critical and think for yourself when you hear them!