My favorite piece of man trivia is from the source of the tunefs BSD man page, which contains:
.\" Take this out and a Unix Daemon will dog your steps from now until
.\" the time_t's wrap around.
.Pp
You can tune a file system, but you cannot tune a fish.
https://github.com/freebsd/freebsd-src/blob/main/sbin/tunefs...I guess the joke is you can scale a file system or a fish, but can only tune a file system?
You can tune a fish, it's that the command for that is fish_config instead.