An articulation of intense joy, affection, happiness, surprise, or jubilation. Often accompanied by or inspired by physical platonic affection. (often associated to predominantly feminine language)
X: awwww, that was so fucking sweet, come here and give me some love.
Y and X hug (in unison): GOOOOOOOOO!!!!!!
X: Surprise! Happy Birthday!!!
Y: GOOOO! awww, guys, you didn't!!!
Y blushes and smiles the biggest smile of all time