Man hunting, u also call me mkfucker when i join. You are lucky i was in good mood that day and ignored. Everyone knows you have this nerve of insulting people and acting trash, not caring about the consequences because of the "I am so pro with m4 headshots, i own everyone" shitty attitude u have.
And what you call childish is actually acting very mature to just mute the trash talker. Whats childish is randomly picking up fights with people around, trash talking about them, calling them names or having flame wars with trash talkers.
I hear you are already banned at most of the servers, why make it difficult here too? just be silent and take headshots and enjoy the game.