You guys said most of mine.
Certain cliches rub me wrong. "Ding ding ding! We have a winner!" is probably the most grating. But I'm fine with some other cliches for some reason.
I hate the overuse of extreme emotional responses, like "Utterly disgusting." Yes, some things are worthy of it. The man that ate the homeless guy's face, that is "utterly disgusting." Syria using chemical weapons on its people is "utterly disgusting." The opposing political party proposing a bill you don't like is not "utterly disgusting."
Never said he did, just commenting on how it's annoying in real life.
It's a slight form of sexism. If I were a boy, that cashier would not have said "hon," "honey," or "dear" to me once.
No, he probably wouldn't have, you're right. He probably would have said, "man," "son," "dude," "bro," or some other male-specific pleasantry, because you'd be male.
I mean, I get that you can see "hon" as condescending (even if unintended), just as "boy" or "son" can be condescending. But its adult-to-child vibe is where the offense lies, not in its gender specificity. "She," "he," "his," "her,"... Gender is important, and we've imbued it into our language. So yes, it's technically sexism by the dictionary definition, as it's discriminating the words used based on your gender, but it's not wrong, just as a straight guy only asking out women is technically sexist yet not wrong.
I just find it really strange that you expressed frustration at people assuming you're a guy on here, then to support that frustration, you express frustration at someone acknowledging you're a girl. Again, I can see why it's frustrating in both situations, but they seem completely unrelated, as the first is frustrating because your gender is important to you, and the second is frustrating because "sweetheart" can give off the child-vibe.