And, naturally, I can't do much to stop them because if they get attention from it, negative or positive, it will just be more fun. So, no yelling, threatening, begging, pleading or even tying them down to their beds will do. (The latter mostly because I'd get arrested.) So we get to 'live through it.' We get to ignore it and hope that even though there are three of them to cheer each other on and give them the reinforcement that they need to keep wanting to do it, they will get bored of it eventually.
Or the gates to the cribs will fall off and we will have insta-toddler beds. That would be great. Three kids running loose in their bedroom at all hours of the night. FAN-effing-TASTIC.
Wouldn't puppies have been easier?