in italiano, please: eccomi

eccomi (avverbio + pronome personale) - here I am or I am here; can be used as a response when someone is calling you: "MJ?", "Eccomi." Often also used as "eccomi qua" with the emphasis on "qua" = "here". I hear people use "eccomi" when they enter a room instead of saying "buongiorno", as if someone was waiting for them. That's kind of rude, I think.