Alan sits on a cake
Here's a brief description of the contestant's attempt. Someone's probably working writing up more detail!
Alan made a cake out of paper and birthday candles after failing to find a real cake. Although Greg initially decided Alan did not sit on a cake, as he allowed Desiree's cake made of shaving foam created by the show's crew, he felt he had to allow Alan's 'cake' be a cake. He sat on a cake in 11 minutes and 55 seconds, receiving 2 points.
(Written by Taskmaster Wiki contributors)