Mutiple Choice FAIL

I'm not a video gamer, but I think this has to do with Portal? Can someone help me out here?

Rick Astley

Astronomy

My astronomy is a little rusty, but I think that should read Evolution OF the Main Sequence. Oh and that's a nice drawing too.

Another Detention Slip

I gotta say, detention slips are some of my favorite submissions. Keep 'em coming!

Long neck reaction guy

http://knowyourmeme.com/memes/long-neck-reaction-guy

Some spelling mistakes

awww da woo woo

WTF?