Bill Brasky is a fictional character, just like a superhero or a Disney princess. He's a character that people talk about and tell stories about, like when your uncle tells you about the time he caught a fish that was as big as a house.
The stories about Bill Brasky usually involve him doing things that are impossible or just really, really incredible. People might say that he can lift a car over his head or that he once ate 50 hot dogs in one sitting.
It's important to remember that Bill Brasky isn't real - he's just a fun story that people like to tell. You shouldn't try to be like him or believe that everything you hear about him is true. But you can enjoy the stories and have a good laugh!