Weapons and fighting

Weapons and some form of fighting have somehow worked their way in to every part of the kids play lately. Not quite sure how I feel about that, but they're boys, what do you expect. Tonight John and Joe went to bed early and we let Dan stay up later since he had taken a long nap earlier. Dan decided to line up all our little cars on the floor then called me in to look at them. Dan has always LOVED cars. He pointed to the yellow one and said, "That one is mad!" Then pointed to the blue one and said, "That one is sad." I asked him why they were mad and sad, and Dan pointed to the blue one and said, "That one lost his shooter (aka gun)," then pointed to the other and said, "And that one is going to hit somebody." Hmmm... even the innocent little cars have been sucked in to the fight.