How does one become a janitor?

You wanna be a janitor?

No, I just wanna know how one becomes a janitor because Andrew here, is very interested in pursuing a career in the custodial arts.

Oh, really? You guys think I'm just some untouchable peasant? Peon? Huh? Maybe so, but following a broom around after shitheads like you for the past eight years I've learned a couple of things; look through your letters, I look through your lockers...I listen to your conversations, you don't know that but I do. I am the eyes and ears of this institution my friends. By the way, that clock's twenty minutes fast.