Obdo
A person who knows more about anime and video games than your teacher. He doesn't care about grades and would rather be caught dead than do his math homework. He might also talk about flaffle like it's a religion.
'I could pass your math test with my eyes closed. I'd rather play Final Fantasy than do algebra.'
'Flaffle is sacred. You're not allowed to use it wrong.'
'You're lucky I didn't fail my math test. I just didn't want to bother you.'