I hate you

This dude asks me to make his drink in his personal cup, always gives me the lid still screwed on, I refused to make it today because of this monstrosity. I was almost gagging. That is a solid layer of milk and coffee scum with rancid liquid underneath. Made his order in a Togo cup and he took his personal cup, dumped it in the trash can, STILL asked me to rinse it out, and then asked me to also rinse the lid with hot water as well to “keep it from getting bacteria”. How entitled do you have to be to have working people be your dishwashers??

I put gloves to rinse his cup out because I was too afraid of confrontation to refuse him further. I’m just shocked at the whole thing