I think I don't understand my neighbors

So I was out walking Jeb the Wonder Dog yesterday, and I ran across something I really had trouble comprehending. In fact, I still don't understand what was going on there. A large, old-school tube TV is sitting out back of a row of townhouses with a hand-written sign saying "Don't touch" and a half-empty orange juice container on top of it. What the fuck?

I'm open to theories on what this means.