Here are some examples:
* "Don't give me that baloney! I know you're lying."
* "That's a bunch of baloney! There's no way that's true."
* "He's full of baloney."
The origin of the word is uncertain, but it is thought to have come from a type of Italian sausage called "Bologna." The sausage was sometimes used to make sandwiches that were considered cheap and of poor quality, hence the association with "baloney" as something not to be trusted.