Greasy Fork

There should be a way to mute bot messages. Some people abuse the bot, and the bot spams the chat with the nonsense.

There's only the filtering of game messages. !gameview.

Depending on the message you could make the modification yourself.
Line 2004:
function GamePrevention() {
if (!CTS.CanSeeGames && arguments[1] && arguments[0].match(/^\[(FISHING BOAT|TRIVIA)\]/)) return false;
return true;
}

You'd adjust the following:
(FISHING BOAT|TRIVIA)

To:

(FISHING BOAT|TRIVIA|DAD JOKE|CHUCK NORRIS|URBAN DICTIONARY|ADVICE)