I learned about 16 years ago on a Solaris course that /usr wasn't "user", I still say "user", but I'm happy to see the information spreading that that isn't what it actually is.
I always thought it was user and never questioned it. Yeah man there's shared libraries in there for all the users, so it's user. This makes more sense now.
If you want to confuse people... I pronounce /etc as "ets", but one of my coworkers recently called it "slash e t c" and I had to ask him to repeat it a couple times before I figured out what he meant...
Well, considering that I am with coworkers who don't remember when to and not to put the '/' at the start of the file path (despite me explaining it to them multiple times), "slash e t c" is probably the better way.