I have no idea.

My English teacher mentioned psychology (Idk if thats how its spelt... yeah)

I didn't know what it meant because I was tired (I had about 5 hours sleep bear in mind)

And I said to my friend "Is that where everyone learns how to use weopons like chainsaws and guns?"

My friend... well. She didn't reply. Just stared at me. I don't blame her. 

I later looked it up on Google. It actually means the study of mind and behaviour. Yep. Whoops.