Here are some examples of how "hooey" can be used:
* "That's a bunch of hooey! There's no way they could have won the lottery."
* "Don't listen to him, he's just spouting hooey."
* "She told me she could fly, but I called her out on her hooey."
Essentially, "hooey" is a way of saying "that's ridiculous!" or "I don't believe you!"