Groot: "I am Groot."
Peter: "Well that's just as fascinating as the first 89 times you told me that. What is wrong with Giving Tree here?"
Rocket: "Well he don't know talkin' good like me and you, so his vocabulistics is limited to 'I' and 'am' and 'Groot', exclusively in that order."
Peter: "Well I tell you what, that's gonna wear real thin, real fast, bud."