Warning: goggles Near the end of the first episode, they played a game where they had to stand on hanging rigs while all sorts of stuff was thrown on them, including some "golden caviar" gunge. I can't find a clip of the whole game, but here's the end (left to right: Todrick Hall, Miesha Tate, Teddi Mellencamp): https://www.youtube.com/watch?v=FWpY5cVbqPA
I vaguely remember an ad for a season of Big Brother USA that had a few clips of people being pied and one woman shoving her face into a cake. Could never find it anywhere online.