Kids are interesting creatures, especially when it comes to vacation time. It is not an infrequent occurrence when the boys will resist the "schedule" or "routine" of the day. But when they are not following the routine they are lost with listless expressions, not sure what to do. I've not doubt this situation will intensify as they progress through school. But I thought this picture was a classic vacation moment.
David is conquering every foe on the WII while the other boys, well it would appear that the action of the day has exceeded their capacity for focus.