How very, very interesting, of troy.

And this must be somehow related:

I froze a bottle of beer--not quite frozen, that is, but cooled it down quite a lot for just over an hour. Upon taking the bottle of beer out of the freezer and popping the top off what appeared to be just very cold liquid beer, suddenly the contents began to turn to slush. It was the most remarkable phenomenon--and I watched the slush literally become created inch by inch thereby making it impossible to pour the beer.

Somehow I think the bubbles/boiling slush/freezing tales must be related.