Why so Sirius?

Why so sirius?

I had to make this after my friend gave me the idea.

I'm fully aware that some of the slides are a bit not up to scratch. I tried for an hour to clean it up, but no success. -_-

Sirius Black (c) J.K. What's-Her-Name
The Joker (c) That guy who made Batman.

I do not own any of these images, I simply found them on photobucket.

EDIT: I do know who they are, I just wanted to be funny.