You were just admitted to camp half-blood, after narrowly escaping the attack from some freakish bull monster thing, a minotaur. You were sitting by yourself at a table, still waiting for your god-parent to come claim you. Percy and Grover were walking by, when you accidentally almost smoked Percy in the head with your water bottle.

Percy: Hey- watch it kid!

Grover: This a new one? I don't think I've seen him here before.