The team find themselves trapped in a room with a door locked by a four-digit code, and have to play this game to discover the code and get out. The players take turns answering trivia questions, with a correct answer letting them take their chances with the row of numbered cubicles on the back wall of the room. They have to choose one and step inside - four of them will let them out clean, but the others will gunge them. Once the four correct booths have been found through a messy process of trial and error, the code can be worked out from the numbers of the cubicles.

This game was heavily influenced from the final round of the UK game show Eyespy, where a similar row of cubicles was just used as an obstacle - four of them would let the players out clean, six would gunge them.