I'm going to comment on a customers order so they would tip for once
Why would you try to get a tip?
I got tired of doing my best and they would just pretend to understand
It can be frustrating to not get tips when you are doing a good job but you cannot comment to the customers about wanting more tips. It will cause them to complain and you might get fired.
I know, I just want to vent at them.
Well I'm glad you at least understand where I'm coming from.