Annabeth Chase hates Christmas. She never had a good experience with it as a kid, with her horrid stepmother and being on the run from monsters trying to kill her and all, not to mention the fact that the holiday itself was highly illogical. I mean come on, a fat guy sliding down billions of chimneys in one night? If he was fat how would he even fit in the first place? To Annabeth it was a statement, a fact, she just didn't like Christmas. To Percy it was a challenge.