Did you see this in Guardians of the Galaxy? Rocket invented the word because he was making fun of Groot's vocabulary. Notice how the rest of the sentence is intentionally ungrammatical: "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."

It's not a real word in English. It looks like a word somebody made up to combine vocabulary with fantastic.