After the war is over, Zeus offers to grant each of the seven one wish. Anything.

Annabeth steps up and asks. "I would like to be able to say anything , anything at all, to one of the Olympian Gods without fear of punishment or retribution."

Zeus, confused, allows her this request.

She turns to Hera and says "F**k. You"

Percy has to be carried out of the throne room because he's laughing so hard.