After Fred and George left, the school was almost in a state of open rebellion against Umbridge. Students, faculty and staff---save only Filch---were doing all they could to sabotage and frustrate our lovely Headmistress. When she tried to "teach" her Defence classes, everybody began fainting, coming out in fevers, throwing up, or having nasty nosebleeds, thanks to the Skiving Snackboxes that Fred and George had developed. Watching Umbridge throwing a tantrum as her whole class claimed to be down with "Umbridge-itis" was utterly delicious. Normally I'd have disapproved. This time I was coordinating the Skiving Snackboxes.