Lemme guess... the black-haired girl is a vamp, and she's hitting on the blonde girl's boyfriend/slave/Civics teacher. So blondie is off to stake blackie with the pencil. And the guy is thinking about... heartburn. Yes. Shouldn't have eaten that pizza at 3 AM, hun.

No the blonde is sizing them up with her pencil to see if they'd both fit in her oven at once. She's mad though, because she'll have to first chop them in half, because only half of one will fit. and that's extra work. HE'S thinking about the fire being hot in the oven...because he can read her mind, but he doesn't realize how big her oven is, and how he'll have to be chopped in half, because those aren't direct thoughts of hers. The black haired chick is just stupid. that's all there is to it. she's like a black-haired me. :3