Ève and Matthieu touch it and skip it
Ève and Matthieu come up with many theories, includes that they mustn't be more than one stepping-stone apart, that they must be stepping on the same foot, and that they can't step on the red stepping-stones.
They eventually stumble upon a method of alternately saying "Touch it" or "Skip it" in relation to each red stepping-stone, and stepping on or skipping over those stones, which satisfies the requirements of no long periods of silence, and no words containing 'L'.
While explaining their solution in the studio, Matthieu says "Touch it, skip it", thus coining the episode title.
They completed the course in 9 minutes and 49 seconds, winning the task.
(Written by Karl Craven)
(Illustrations collected by Jenny R and adjusted by David Fuller)