The term 'REALLY IRK' can be broken down into three separate words: ENRAGE (6 letters), EATAT (5 letters), and GETTO (5 letters). ENRAGE means to make someone very angry, EATAT is an acronym for 'Eat At Home, ' and GETTO is a slang term meaning to get to the point. Together, these words suggest that someone is really annoyed by someone else's behavior, and they want them to stop talking and get to the point.