Why must people be dumb?

[zengar]

In this day and age the concept of a "combo meal" ought not still be a mystery to a middle-aged person, especially after five minutes of attempted explanation. Furthermore, "sales tax" ought not to come as a nasty shock that provokes an argument. (not the same person, but the next one in line) I give a pass to the person who wanted to know what was in the chili cheese fries and wouldn't accept "chili, cheese, and french fries" as an answer. I understand about food allergies, even though that doesn't make things any easier for the cashier and this guy never said anything that indicates that was the case here.

I'm thoroughly impressed that the cashier got through those twenty minutes without once using any synonyms of the word "moron," and I was happy to see that I wasn't the only one after that in line who tried to be particularly polite to make up for those who came before us.