Mostly used by the character Slimecicle, in the show Generation Loss. This word is used twice in the first episode of the show as an interjection to start a phrase or emphasize the next words you're going to say.
"Goo goobie", sometimes spelt "googooby" or "googoobie", is an exclaim used by Slimecicle, in the famous horrow show Generation Loss made by Ranboo (Ranboolive).