James Gunn Has a Special ‘Groot Version’ of the ‘Guardians of the Galaxy Vol. 2’ Script
“I am Groot.” With the exception of one small variation, this is the only thing we hear from Vin Diesel’s Groot throughout Guardians of the Galaxy. What makes this such a funny running joke isn’t the fact that he only says the one phrase, though; it’s the fact that Rocket Raccoon understands him perfectly, unearthing complicated sentiments and emotions from three simple words. Translating Groot’s dialogue would be like un-bleeping the profanity in an episode of South Park: you pretty much already know what Groot is saying, and the jokes just work better this way.