My neighbor has a rooster, so I thought it would be funny to stuff their mailbox with chicken recipes.
Why did you give these recipes to your neighbor?
I did it because roosters are such a pest.
You seem very frustrated but it is best for you to keep your nose out of the business of others. Your neighbor is allowed to decide to have roosters.
What? But THEY'RE ANNOYING. Don't you agree?
I agree, that would be annoying, but this is not the way to handle this. You can talk to your neighbor about the noise the rooster makes, but don't talk about killing and eating it.