Like when you have a team mate target an enemy and you barge in front of him in an attempt to get the KMD, meanwhile taking a salvo of fire in the back whilst communicating in a loud clean voice over voip that your team mate should go back to play COD and freindly fire is in fact ON.
I assume, I really could'nt say from personal experience, if it did happen it was only once and completely unintentional...
