According to Pratchett, five exclamation marks is an indicator of "someone who wears their underwear on the outside".
Madness string 1913
From trying to make others happy and tick the boxes of the many multiplying standards and recommendations for our meetings, I stopped making jokes of any kind, frankly my presentations became dull to my eyes. At the moment I have no plans to make any presentations or even take part in meetings in the year ahead. The prospect of starting up again and freely sharing knowledge or experience from my volunteer and programming through planned presentations and workshops does not excite me any more. Instead it now feels like the sort of painful hard work that needs to be paid for.