Sir was becoming quite incensed at the ignorant answers his students were replying with and frowned.<br/>Meanwhile, Katie was sniggering at his obviously wrong reply. Britney-Britney, who was sat directly in front of her, spun around and fixed her with a scowl.<br/>"Shut up, nerd girl!" she said, in a brittle, nasally tone, the aftereffects of last week's nose job. Katie had to resist the urge to growl back, which she just about managed.