My dentist charged me $50 for missing a visit.  I responded that I was under no obligation to pay them, as I had signed to contract.  They countered that their policy was clearly displayed.  I countered that their policy was not legally binding, and refused to pay.  Then I thought, wait, if I want them to not do bad things to my teeth, I should probably play by their unfair rules, so I paid the fee.\n\nBut I fucked the dentist's daughter, so it was all good in the end.