I PERSONALLY KNOW Clare The Xenofriend.
She does nothing but minge around on Gmod trainbuild servers Picking on other users. Recently got Demoted on FC&N aswell.
She does build some really good Steam engines though :^)
ONTOPIC: Yeah,I've had this happen about 100 times. I became part of a few arguments. Yeah,I loving hate it when it does happen. Usually ends with both being banned or recognized as Minges.