Your argument is invalid, have you seen my massive bone sword?!
Route 666 - Dean/Castiel AU
Destiel teacher-student AU: Dean is the new Math teacher at a local high school. Cas is a graduating student who’s having difficulty in his class. Dean offers to teach him everyday after school. The only problem is… Cas likes to stare at Dean a lot, and Dean might be enjoying their tutoring sessions a little too much.