What the fuck is wrong with you? You obviously know what the guy means. So what if he doesn't know the correct terminology? Stop being a huge condescending dick and help the poor guy. And who are you to be a condescending dick to anyone? You sell clothes for a living. Do your fucking job and sell the goddamn clothes.
He wanted a "button" shirt, which obviously means a shirt with buttons on it -- a dress shirt. Notice that he didn't use the "button-down" term the second time around but this douchebag SA decided to continue to mock the poor guy for his own amusement. And no, you don't have to "shout expletives" to be a dick. Everyone can tell how big of a dick Suitmyself was acting like in this case, despite his fake polite manner.
In the end, the customer lost nothing. He would just buy a shirt somewhere else and maybe tell his friends about "this douchebag SA" he met at a store so they would shop elsewhere as well. Suitmyself, and ultimately the store, lost out on a sale and maybe repeated business in the future. Tell me who won this fight.
Oh and BTW, the term "button down shirt" has been used casually, though technically erroneously, to refer to dress shirt/button-up shirt for a while. See here.
It's not a huge error to ridicule someone over.
Clarification on the button shirt situation:
Yes, I did take him over to our dress shirt department and I actually showed him some dress shirts, pointing out the vertaical row of buttons down the front of the shirt. You'd have thought this would have solved the issue of clarification . . . but, sadly, it didn't.
Dude looked at the shirts and said he wanted a button shirt.
"All shirts have buttons, sir!"
That was when the expletives began.
You would think buddy would have just picked a shirt and said, "I'll take this one" or something like that; in other words, all he had to do was point to which one he liked and that would have been it.
He didn't do that.
He just looked at all the shirts and said, "I need a BUTTON SHIRT!"
Yes, I even pointed out what a button-down collar would look like (I pointed to the collar points on a shirt and explained there would be a button at the end of each collar point if it was a button-down collar) but, NO, BUDDY STILL DIDN'T UNDERSTAND WHAT THE FUCK I WAS TALKING ABOUT.
Stupid dumbass moron.
You would all be surprised how many customers come in referring to a dress shirt as a button shirt. I'd suppose that in their minds, a "non" button shirt would be anything but a dress shirt (e.g. a t-shirt, a golf shirt, that sort of thing). Everytime someone comes in looking for a button shirt, I always say " . . . all shirts have buttons" and they they explain themselves by going into mime mode and using their fingers to point to a row of buttons running down their torso.
Did I think buddy meant a button-down collar? No. He was obviously NOT referring to a button-down collar.
Did I think he meant a plain regular ol' dress shirt with--wait for it!--buttons going down the front in a vertical row? Most likely.
BUT WHY THE FUCK DIDN'T HE GRAB ONE AFTER I SHOWED HIM WHAT A FUCKING DRESS SHIRT LOOKED LIKE? WHY THE FUCK DIDN'T HE CONFIRM THAT WAS WHAT HE WAS LOOKING FOR?
NO, BUDDY WAS LOOKING FOR SOMETHING THAT WAS NOT AS YET DESIGNED BY MERE MORTAL HUMAN MINDS. BUDDY WAS IN HIS OWN FUCKING WORLD WITH HIS OWN FUCKING VERSION OF A BUTTON-SHIRT. HE WANTED SOMETHING THAT WAS AKIN TO WHAT PEOPLE WEAR ON HIS HOME PLANET ALPHA BIZARRO CENTAURI.