I think I just genuinely made a telemarketer angry by trolling him about needing a poltergeist removed from my chimney. He said I was taking food out of the mouths of his children and called me a nasty woman.
That's impressive. I usually just confuse telemarketers by trying to take their order as if they had called a pizza place. I have made a few crack up by going with a whole "You've reached the Death Star Routine" though