I have never understood how someone could argue with a straight face about a fine for something they initially paid nothing for.
Of course, then again, we are a society that can and will complain about things we receive for free (see: renown restaurant critics).
I try in earnest to be as professional as I can be with these patrons, but I find it awfully difficult to maintain my composure.
Anyway, Mondays are bad, but they give something to strive for in my personal life: Don't be a dick.