well i have to wear pants (not jeans but i do anyway) and a nice shirt ie not a tshirt.
but on casual friday its like....wear what you normally do as long as its not terribly offensive, so i usually wear a band shirt and some jeans or shorts
isolation_years what do you do for a living?
my work 'uniform' if you can call it that is you can wear whatever you like, as long as its black. Works for me.
i wear death metal shirts to work