It took me a few goes to refine the idea. I started with the word sorrowful and thought "ok what could not possibly be sorrowful?" -> a car parking space. Ok then what attributes could a car parking not have -> being liquid. Then once I had got the idea then I wanted some other physical attribute this nonexistant thing might have and that got me to temperature.

Darn. I was really pulling for the hot cocoa theory.

Also, you clearly don’t live in New York City if you can’t fathom the idea of a parking space being associated with sorrow!