Sarah wets the toilet paper
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Sarah immediately starts out throwing entire rolls of toilet paper at the toilet, missing the bowl with the first six, and managing to hit the flushing mechanism with her seventh. She then realises it would probably be best to switch to another strategy, and requests some water, which she then uses to wet some wads of toilet paper, to make them heavier (or 'more like a poo' as Greg observes). Several of the wet wads land right on the toilet seat. For her final throw, she stuffs the remaining small wad of toilet paper into one of the water bottles, and drops that, missing the toilet. Overall, she manages to get 80 sheets of toilet paper into the bowl, securing third place in the task.
(Written by Karl Craven)