I can do it blindfolded.... I have a lot of stuff where I have to wear them.
any exam, in my conservative uni, its frowned upon to wear anything but full dark suit as a guy. I also have lots of parties and trips in costume and the secret underground organisation im in meets once a week for a meeting in costume
One detail most don't even know-
It's supposed to reach onto your belt with the tip when I stand upright.
That's the only correct length. If you're wearing a suiting little vest over it, it may be shorter.