Of course kids are going to play. It's a game with toy guns.
If they get excited and make mistakes, it is because they are kids.
There also seems to be alot of 18 year olds referring to 15 year olds as kids? Most people can't tell the difference, and lads never grow up anyway (especially ones that play with toy guns)
I have more of a problem with guys over 30 who take it far to seriously, dress up as movie characters (with obsessive detail) and run around barking orders because they have never had any authority in real life.
I've seen some pics of grown men dressed like idiots infront of the mirror thinking they look cool. I shown one to my girlfriend last week, she said she would rather come home and find me in bed with another woman, than come home and find me dressed like that in the bathroom.