Once every few weeks you'll have the option to open Pandora's box. For the box to be opened, it needs 1/4th of the total players to "Swipe their pass" (Exactly like how you all claimed a bedroom). At the start of the week I'll post what day the box will be available to be opened. On that day at a random time I'll post when it's time to open the box. You'll then have from that point until the end of the day to decide if you are going to open the box.
If the box is open, only the first x amount of players to open it will receive a reward, while EVERYONE in the house will receive the penalty. So ask yourself. Do you want to snag the reward while you can, or do you trust everyone in the house enough to not touch it?