

There was an old Top Gear episode with a race in a Nordic country with an interesting take on a price cap — the price enforcement was that anybody could buy your car (for no more than the price cap) after the race.
So I think you technically could enter the race with a brand new tricked out rally car…but anyone could buy it for $500/$1000/whatever.
It is “backwards” from some other commands — usually you run copy/rsync/link from source to destination, but with tar the destination (tarball) is specified before the source (directory/files).
That, and the flags not needing dashes always just throws me for a loop.
And the icing on the cake is that I don’t use tar for tarring that often, so I lose all muscle memory (untaring a tgz or tar.bz2 is frequent enough that I can usually get that right at least…).