it 's a weird thing i 've noticed about seniors the summer after school finishes : enthusiasm and camaraderie sweep through the graduating class , washing away all grudges and cafeteria hierarchies in their path , until girls who 've spent four years bitching about each other suddenly start hugging , tearful , the best of friends , while the guys who spent their free periods stuffing geeks into bathroom stalls laugh with their former victims about how it was all just high school - no hard feelings , right ?