Whose idea was it?

Last night Dave and I were having trouble getting the boys calmed down to go to bed. Finally, Dave said "Let's just forget about them and watch our movie and relax." So we did watch our move - a few times during our movie I thought I heard the boys running around upstairs, talking and playing, but I just ignored them and enjoyed the time with Dave. Around 9:45 we go upstairs after the movie was over. I checked on Logan, put his blankets on and then went in the boys room to check on them. They were gone. Neither one was in his bed. Then I went into our room and Trevor and Colin were fast asleep in our bed. This morning when they woke up I said, "I found two boys sleeping in my bed last night." When I asked whose idea it was to go to sleep in Mom and Dad's bed Trevor said, "It was Colin's idea." I knew he was right since Colin is always the one to think of what to do at night to get out of going to sleep and Trevor usually follows along. Now that they've done it once I wonder if they'll try and do it again....