Okay kiddo, so there's this thing called an "obadiah bull." It's actually a made up term, so don't worry if you've never heard of it before. Some people just use it to describe a really big or strong bull.
You know how some bulls are really strong and have big muscles? Well, if you called one of those bulls an "obadiah bull," it would mean he's even stronger than other bulls. It's kind of like saying he's the king of all bulls!
Does that make sense, little one?