This is the type of person who seems to have an extensive, never-ending supply of facts and knowledge about every subject- and it's really annoying. In every lesson they always shout out answers, and even the teacher seems get annoyed with them. You don't know how they have time to learn all this information, and you're massively envious of their impressive memory.

This person usually annoys people by almost rubbing it in their faces that they're inferior in everything to them. But at least you know where to go when it comes to general knowledge quizzes.