Sometimes when you set up an account with a company, they'll let you set a question and the answer. Then when you call in, the operator will read the question YOU WROTE and you get to provide the response. This has the potential to be highly amusing if done right:
Q: What the hell is your f***ing problem, sir?
A: This is completely inappropriate and I'd like to speak to your supervisor.
Q: I've been embezzling hundreds of thousands of dollars from my employer, and I don't care who knows it.
A: It's a good thing they're recording this call, because I'm going to have to report you.
Q: Are you really who you say you are?
A: No, I am a Russian identity thief.