From: Guardians of the Galaxy
Who said it?: Groot
The story behind the quote: This quote comes from, well, Groot from the Marvel film and surprise hit, Guardians of the Galaxy. Yes, it was a surprise that a movie that featured a bunch of Marvel characters that only hardcore comic book collectors know about managed to smash all sorts of box office records!
Anyway, the quote is actually the only thing that Groot (voiced by Vin Diesel) can say as explained by Rocket (voiced by Bradley Cooper).
Actually, the explanation why Groot says just these three words, it turns out it just sounds like he is just saying I Am Groot. Underneath those three little words are a series of inflections and very subtle tonal changes that acts like his vocabulary.
There’s actually an entire language he speaks but you have to be incredibly astute to understand all of those almost negligible changes in pitches and speed to understand him.
Geek wisdom: Sometimes, it’s not what you say but how you say it. In fact, sometimes, the way you say something may change the meaning of the words themselves. Additionally, you have to also remember that actions speak louder than words. While we may not be able to understand what Groot is saying practically all the time, he lets his actions do the talking for him most of the time.