Cancer flinched slightly as she left. While his rude gestures were normal, he actually expected Carolyn to break his finger. Or worse.

There was an awkward silence as she left, and Cancer couldn't believe it. "Fuck yeah", he whispered, still in a little bit of shock. Then the volume of his voice grew louder as he realized that he just called a prefect (Carolyn no less) a ridiculously nasty name and got away with it. 

"FUCK YEAH!", he shouted as he pumped his fist in the air.