I'm a cashier, and I'm tired of the treatment I receive by customers. They think I am dumb because I am a cashier.

I had a lady explain to me how to count to 24. I told her, "Gee, if I only they taught me that in college algebra, calculus, and statistics." And she said, "well, COUNTING is different than THAT."

I have customers who happily go on and on and on with another customer, then turn around an instantly scowl at me and berate me as I ring them up.

I have customers who think I'm a human vending machine. They walk up without even saying hello and say "PACK OF CIGARETTES. THAT. THERE. UP, UP, LEFT, LEFT, RIGHT, DOWN. THERE!!!" "Have a nice--" "BYE."

Customers just assume I am dumb because I am a cashier, they scream at me, yell at me, complain to me, sneer at me, scowl at me, scoff at me, make fun of the way I talk and dress and act, mock my voice when I say hello...

...And I am absolutely fed up with it. At what point do I stand up for myself? I keep telling myself, I need my job, but I'm tired of the way people treat me. Even my coworkers think I'm dumb. They all laugh because I am strictly on the register when they do it all, yet my boss is the one who says any other job is beneath me and I am the most qualified, most exceptional person on the register. She says I make people feel welcome and wanting to come back, so I feel if I stand up for myself on the register against rude and mean customers, there would be serious consequences.

But I'm done. I've had it. I do need to say something. It's not just one customer that upsets me, multiple times a day I get a-hole customers. And I'm tired of feeling dumb and belittled. I am a straight A student in English, math, biology, psychology, sociology, and every class I've attended I've excelled in and planning on going into the medical field. I'm exceptionally smart, exceptionally gifted, exceptionally kind (to the point of being stepped on) but I have social anxiety and I'm fuming on the inside when people think I'm dumb because I'm "just a cashier" and I'm tired of being mocked and belittled and screamed out and bullied and getting my emotions thrown around because customers are a-holes...and I just don't know what to do to stand up for myself.

So what do I do? What can I do to stand up and SHUT DOWN a-hole customers? I'm a full time employee and can't stand the constant torment. I need some one-liners or SOMETHING to stop these customers from making me feel miserable.