[maaik]

Drink 3L of water in the two hours before starting.
You must spend the next 48 hours in diapers. Be sure to stay well hydrated and drink a large glass of water at least every half hour.

Sounds simple right? But each time you change you must add another diaper layer (so the first time you change its into a double diaper, the second time its into a triple diaper, etc), AND to make it even harder, each time you change you must do it further and further from your house: your first change must be at least 1km from where you live, your second at least 2km from where you live, and so on. Have fun waddling!