So I was at Cciamlazy's server the other day, playing AvPvM or whatever you call it
And Gameking, who was a marine, suddenly began ranting, pissed about something I had done. He also started claiming that I was referring to everyone as "gay cigarettetz" at the end of every round. I admit that I jokingly said something along those lines once or twice, but not more than that.
After I was done arguing with him and his multiple attempts to votekick me for no reason, I decided to client-side mute him (No pics, sorry. I have a chatlog if anyone demands such a thing). This somehow pissed him off even more, so he spammed my IRC client:

Note the size of the scroll bar, as the spam also existed above it for about 4 or 5 times as much.
After that, he eventually left the server. Not really the first time I've seen him act this way, but this was definitely the most significant.
/discuss