Don't Pick A Fight With Me When I'm At Work

It pisses me off so bad when a customer will pick a fight or be demeaning to me while I'm at work. What kind of pansy does that? I can't say what I really want because I'm at work, and you would tell on me and try to get me fired the instant I gave you ANY attitude back. They do it on purpose because they can get out all their aggression on someone who can't talk back to them so they feel good about themselves. How sad for them.