Penelope says starting food fights is the sort of thing that only Blaise Bellaire immature Gryffindor boys would do, and she would be disappointed if any of the Ravenclaws were to start food fights. There is to be absolutely NO starting of food fights.
Ravenclaw is in the lead by 715 points, and there likely won't be a need for rioting at the Ravenclaw table.

Caw caw Ravenclaw!