I’ve been waiting for this question for my entire 22 years of life. I’d teach it to say “Please help me, I’m trapped in the body of a parrot”, giving a lengthy explanation of what happened to make them that way. And once the person is left lost and confused, my dear bird companion will end everything off by saying “No one will ever believe you.”
…Of course I don’t need a parrot to do this, I could make one out of illusions! Makes you wonder what else around me has been fake aaall along, hm? He laughs, pausing. …Just joking. I’d teach it dad jokes.