Just as there is a way to lose, there is a way to win as well.
I was in a recent alternate shot game, getting killed 4 down, and the winning team was taking full 90 second timers yapping away at how great they were. If they were in the same room they would have broke their arms patting themselves on the back.
Needless to say it was pretty frustrating and disrespectful if you ask me....so I interupted their courtship and said.."come on guys, lets finish this up please"..And of course then I got the lecture about patience, blah blah blah...I stayed and finished the game and left.
My point is, be respectful, losing OR winning. You will have less people raging and quitting on you if you don't milk your opponents defeat.