Coach Z's office which has many stupid things happening in the cartoons including (but not limited to) dead
Strong Sad.
Some facts I know: Coach Z's Office was (Rather Worryingly) going to be the Showers.
Also, there was a rumour that Coach Z sleeps in one of the lockers, but Coach Z denied that (
The Cheat sleeps in there) and stated in his Video Profile that he "sleeps on the Bench right here." This is proven in
A Jorb Well Done. Also, the sleeping on the bench thing has led to his back not being in real good condition.
Oddly enough, Coach Z does have his own apartment, as Strong Bad tells us in the Costume Commentary, but he sleeps here. The apartment's a pig sty, though, so he might just come here to get away from having to dig out the trash covering his bed.