Karotte is a german word and nothing bad :)
+1 to parse chat and mute anyone - incl. votes - if someone use this words in his name.
And parse a copy without whitespaces, special chars convert the letter ZERO to "o", etc and make anything lower case.
Then if someone repeat the sentences of others don't mute this player.
If you have so much code that the server's CPU overheat, you have reached your goal that this players are muted for ever :)
But it would be really nice if the clients parse this and send a parsing request to the server at positive results.