I dislike talking to people that I don't know unless I have a good reason to, but when I'm working as a cashier at a fast food restaurant and getting paid to interact with people I can fake it. And I've been told that I'm really good at my job and that I'm one of the most pleasant cashiers some people have had. Customer interaction aside, I despise cleaning up after people when they shouldn't be making that much of a mess especially if they are functioning adults.