Oh, man, we have Nerf wars at work all the time!! Its great fun! We usually end up throwing the darts at each other after the guns are all unloaded!
It helps to work for a gaming company where this kinda stuff is "normal"
Oh, BTW, you'd be surprised at how fast and hard you can make these darts go with a 3'-4' length of PVC pipe in the right diameter....its perfect for these darts! One guy at work went as far as duct taping an el cheapo laser to use as a sight!!
Ah...good times....good times.