Talk:Sit down next to Mr Apples/@comment-24400544-20190926022005/@comment-25219384-20190926061148

Any time you fail a challenge for which you've used a second chance item, that second chance item cost is doubled on your next attempt of the same challenge.

So if you try again (2 CS/SI) and fail again, next time it will require 4 of them, and then 8, etc. It will only reset to requiring one second chance item once you've either succeeded in the challenge or have accepted the failure.