I knew a woman who bred African Greys. She had a rescue parrot from a... rather sexually active place, and Eddie would say many many different things unexpectedly. He did a lot of smart actions as well, save for bird talk. Anyway, she feared him talking, but discovered that people who heard him, then his story thought great, i can have a parrot who talks a lot and will never say such things. In other words, that joke is closer to reality than many would guess.