I still own a copy of SkiFree. Such a great part of my childhood, although I somehow forgot for a period of fifteen years about the “F for fast” trick.
I tried to remember the name of this stuff while in the frozen foods aisle with my mom the other day. “Remember that stuff we used to get? It was like mousse, but it had some fancy V-name? And it was shaped like a rectangle? With squiggles?”