Reminds me of a rewrite I was a part of years ago. During the rewrite someone put a humorous picture of a coworker as the 500 page. In development it was amusing but we didn’t hit too many 500 pages so we didn’t see it often. When the launch came no one remembered we had this picture as our 500 page. Customers were not amused to get a picture of some nerd as an error page.