I got into a nasty fight over ping pong
Over ping pong? Why fight over something like that?
Because the guy accused me of cheating.
All you have to do is tell them that you did not cheat. No big deal. Is seems pointless to argue over a ping pong game.
I didn't want to look like a loser. I had to let him know who the real winner was.
It's wrong that he accused you of cheating. But it's not worth getting in a big fight over it. You should be the bigger person and walk away.