Oh damn I remember working at a telecom company in the early 2000s. About once every quarter someone would email the corporate distribution list with an announcement that was intended for just their team.

The subsequent avalanche of people replying all with "don't CC me on this kind of email" followed by the inevitable follow up of people with no self awareness replying all that people shouldn't be so stupid as to reply all to a corporate wide email because it can crash the email server followed by yet another wave of people replying all to point out that the person just did the same thing and mock them... Then the email server would actually crash, then there would be an official message from leadership telling people not to email the corporate directory, and not to reply all of someone did...

Then inevitably someone would get back from leave a couple of days later and reply all again telling people not to CC then on that type of email...

It was downright hilarious.