The first startup I worked at used IRC - well before slack etc. I hadn’t touched it since I was a teenager and think I managed to violate just about every internal channel guideline. Took me a minute to understand what “echan” meant.
"Echan" = "empty channel" - IRC slang for joining a channel, seeing no recent activity, and immediately leaving.
It's considered bad etiquette because IRC channels are often quiet but still active - you're supposed to stick around and just ask your question directly rather than bailing when you don't see instant chatter.
For the rest of us, what does “echan” mean? Searching online for “irc echan” wasn’t much good.
edit: some wider-range searching suggests it might be Spanish for “kicked”.