Erin said that this was fun to take part in, which I can believe: it looked like both people were enjoying themselves, so it was fun to watch. They didn't stick rigorously to the rules, but there was still some structure to it along with spontaneity. At the start, I was a bit dubious about them searching for tiles when the gunge/foam was so shallow (i.e. this didn't seem like much of a challenge), but the gunge got deeper as the scene progressed, so all the mess effectively got used twice. The only change I'd suggest is that when one person gets the "X" tile (winning the game), the other person should remove any clothing they've got left.