adam dudley is like groot : https://en.wikipedia.org/wiki/Groot . he can only say fukk / i am groot , but whenever he is saying the trademark fukk / I am Groot , he has actually been saying a number of things, and his varying inflections of the sentence are the equivalent of words and sentences. People who have interacted with him are gradually able to decipher the meaning of the inflections and can carry on full conversations with him as time goes on.