Password "Complexity" Requirements"

I actually forget what web site this one, but found this little gem while trying to setup a new account:

I guess my password doesn’t meet their requirements?

Then I decide to use this instead.

No, I didn’t actually make my password “password123” but I would have thought a site warning my against it wouldn’t allow “password”+< something >. The fact that it wouldn’t accept my random password probably should have been my first hint that it was not going to go well.