Annabeth wouldn't talk to Percy no matter how many times he had tried to strike up a conversation.
We were walking along the tunnel of the labyrinth with Rachel leading, Annabeth storming after her and Percy hanging back. Well then there was me, Nico. I was still pretty pissed at Percy but I had begun to listen to my sister's words of advice. Anyway I was in the back finding the whole situation pretty comical. Percy was clueless as always.
Well when turning one of the corners Annabeth stats whistling a tune. Upon hearing Annabeth Rachel turned almost as red as her hair and started humming the same tune back.
They kept going on like this for Gods knows how long, each getting madder and lounder with each passing refrain. They finally had to stop because, of course, in came the monsters.
The tune: Anything you can do I can do better