The Un-Superfluid

Wierd spikes in an ice tray

No idea how this happened (click on the picture to enlarge), and I’ve never seen it before, but when I went to pull this ice tray ouf of the freezer last night, there were two spikes of ice sticking out of the cubes at about a 45-degree angle, on either end of the tray, pointing in different directions. I kind of don’t want to empty the tray until I’ve figured out what happened.