This is another Calvin story.
If there is one thing Calvin dislikes it is having his "work" (whatever that may be at the moment) disrupted by a--gasp!--Diaper Change!
Lately when we come into the room with diapers in hand and announce that diapers will be changed in 2 minutes (our standard amount of "heads-up" time in this house), Calvin will start pointing at Charlie and saying, "Bother! Brother Turn! Brother Turn.... Share! Brother!"