When an IRC operator /kick's you from the channel that you're chatting in, and then uses the /ban command to block you permanently.

In general, the act of taking away someone's access to the commons by enforcing arbitrary internet hierarchy rules.
"I haven't used Twitter in fourteen years because I signed up when it launched and got my own real name as my @ handle, but then I told someone else to 'go die in a fire' and the moderators k-banned me."

"Lol the CTO was fucking with malicious plugins for Teams video chat so our Microsoft broker threw the whole organization a k-ban. Now nobody's getting shit done until he can find a new subcontractor to license our entire office suite through."
by OwenF January 26, 2023
Get the K-ban mug.