What the hail?

So I'm working and all of the sudden I hear this popping/clicking noise....like someone is crinkling up a plastic bag or something. And I'm thinking...what the hell is that? And my coworker comes out of his office saying, what the hail?

Yeah, the hail lasted for a good minute and it was banging against our windows. That's insane. We live in san diego for fuck sake. Jenny and I were supposed to go running. Hm...i don't think getting knocked unconscious by hail sounds very tempting.