Perfect example:
Last night this kid and one of his clan mates who was older joined our room on the opposite team. No one said one word to this kid but when we got to the lobby he started calling our entire clan "b*tches". Not only did he feel the need to verbally attack us totally unprovoked, but one of our guys had to be on the opposite team to make the teams even (who is also a kid) and he team killed our guy every round. We got to the lobby and there was more of the same. This kid could've made a sailor blush with the language he was using. The clanmate attempted to defend the little kid but knew he was out of line so tried to stay out of it. When the next map started, 2 of our guys joined their team and team killed the little kid until they got an apology. When we returned to the lobby... all was well. The kid behaved like he should've been all along and everyone was happy.
This could've all been avoided had a child not been on the game at 12:30 am. At least keep them off during late night hours for God sakes.