I think OP is referring to the fact that in many businesses there's this "customer is always right" policy which makes bosses/managers suck up to customers and punish employees for the smallest things. So if we're speaking in context of such a business, then the boss is actually great for such a basic human decency.
And I'm guessing he was nicer to OP because OP might have autism or something, seeing as the rude customer called him/her a "retard". Or maybe it's just because it was OP's first day, everybody's confused on their first day.
In any case, rude customers should be scorned, not catered to like many businesses do. I think there was a post about this exact thing quite recently, where the OP compared these rude customers to children throwing a tantrum.
And I'm guessing he was nicer to OP because OP might have autism or something, seeing as the rude customer called him/her a "retard". Or maybe it's just because it was OP's first day, everybody's confused on their first day.
In any case, rude customers should be scorned, not catered to like many businesses do. I think there was a post about this exact thing quite recently, where the OP compared these rude customers to children throwing a tantrum.