No doubt Frank would’ve cursed some more—busting out the golly gees and the gosh darns—but Percy interrupted by doubling over and groaning.
“Did the world just turn upside down?” he asked.
Jason pressed his hands to his head. “Yeah, and it’s spinning. Everything is yellow. Is it supposed to be yellow?”
Annabeth and Piper exchanged concerned looks.
“Summoning that storm really sapped your strength,” Piper told the boys. “You’ve got to rest.”

The Mark of Athena, Chapter XXI