Warning: spoilers ahead for "Avengers: Infinity War".
As most fans of the Marvel cinematic universe already know, Groot (voiced by Vin Diesel) is a talking tree with a very limited vocabulary. In fact, the only thing he ever says is "I am Groot", and Rocket — a gun-slinging mutant raccoon voiced by Bradley Cooper — is one of the only characters that can decode what the adorable plant is actually saying.
In "Infinity War", a teenage Groot suddenly dies when Thanos (Josh Brolin) kills half the life in the universe with a snap. As Groot is fading into oblivion, he says one last "I am Groot" to Rocket, which only the foul-mouthed critter could understand.
That is, until now.
When a fan asked Gunn on Twitter what Groot actually said, the director offered a translation.
When another fan questioned him about the interpretation, since Gunn does not have a writer or director credit in "Infinity War" (though Drax actor Dave Bautista said he did write some dialogue for the film), Gunn gave a pretty pragmatic answer:
Needless to say, many fans felt a whole lot like this.
Gunn sure likes to drop mind-blowing fact-bombs about Groot on Twitter.
In February, he shook the social media platform when he revealed that Baby Groot in "Guardians of the Galaxy Vol. 2" was actually the son of Groot — a full-grown tree man who gave his life to protect his friends in "Guardians of the Galaxy".
In "Guardians of the Galaxy Vol. 2", Baby Groot is grown from a twig of the dead Groot, and many fans assumed that Baby Groot was a reincarnation of Groot and not his son.
Fingers crossed that Rocket saved another twig somewhere!
CORRECTION: A previous version of this story mistakenly indicated Rocket is the only character who can understand Groot.