From a James/Lily fanfic.
Trying to hide his smile as James looked down at his shirt in confusion, Sirius
opened the compartment door. Quickly, James braced himself for Lilys reaction
to seeing him and the head badge pinned on his shirt.
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Looking back a few hours later, Lily supposed it hadnt been so bad. She hadnt
turned purple after all, just fairly red. She hadnt shouted herself hoarse, but her
throat did hurt a little. And she had only frightened half of the prefects, not all
of them. Most people that had heard about the incident were actually quite
amused. But certainly not Lily. She was still furious.