Haha, I love Arnell for good sportsmanship, unfortunately I'm more like Rikuto here. I'll be nice as long as they're nice. As soon as they start being an ass, I get right down to their level. There is no bigger man with me. It's a "Who can make a bigger ass out of themselves" competition.
I appreciate that and I can understand where you're coming from.
I nowadays either say:
"You can stay in the room and argue with yourself WHILE losing to me".
"You can shut up and take your loses as a learning experience".
"You can leave this room and find another that will boost your ego".
or
If I'm getting a bit upset...I'd normally say:
"What are you going to do, shut up, play, and lose...or play, lose, and keep talking?"
They typically leave after that following match and I send them a message saying "Good Game/s".
And closing with...
Laughing Out Loud @ Rikuto and CyberEvil.