I'm feeling ashamed because I'm looking for a story I discovered on the old forum when someone asked about it remembering the exact same detail ...
at one time the main protagonist gets some new office space and his mother ask the janitor to put HMFIC (Head Mother Fucker In Charge) on his door
sorry that's all the details I'm sure about that story
on the not too sure about list feature the fact the story is maybe a do-over and there may be some ESP
(something about cops or SEC trying to get into the office with a videotape that is melted by the main protagonist)