" Frank stared at him. "Unfair? You can breathe underwater and blow up glaciers and summon freaking hurricanes-and it's unfair that I can be an elephant?"
Percy considered. "Okay. I guess you got a point. But the next time I say you're totally beast-"
"Just shut up," Frank said. "Please."
Percy cracked a smile. "

― Rick Riordan , The Son of Neptune (The Heroes of Olympus, #2)