The rules are simple. Dare the person above you to do something corresponding to the same number as their post.
Example To Poster #10:
If you chicken out, private message the person that dared you and ask for punishment.
Example To Poster #10:
Drink 10 glasses of water, wait 10 minutes after you must pee, and then pee in 10 second bursts after holding in for 10 seconds.
If you chicken out, private message the person that dared you and ask for punishment.