Doesn't bother me, it just shows the mentality of the player if they get a kick out of doing it. How exactly is it fun? The fun part for you, I assume, is annoying the other player? Isn't that a sad state of mind when you get a kick out of annoying a complete stranger? That attitude in general is one of the big problems in our society today. See an opportunity to be a dick and grab it firmly with both hands.