ARRRRRGGGGHHHHH No.Come on they can't be that stupid can they? How the hell can't they know about blue food? Logan plays Percy for crying out loud! He should know what blue food is!This is one of the many reasons the movies suck.
Hahaha he would do this and everyone else would just act like this is normal (In all fairness it probably is) and Percy comes in going 'Nooooooooooooo!' and throws water at Leo and just carries on, as the new campers stare and slowly back away.