For some unfathomable reason, the United States Army has adopted the slogan, "An Army of One," in its recruiting ads.
I also reject "no offense, but" because it prolly means I'm about to be thrown under the bus.
That's also how I feel about "no worries." When you hear that, it's time to start worrying.
Prolly shouldn't use "No worries" if you're not Australian. Doesn't that come from "No worries, mate"? Isn't that Australian usage? Kerry? And then, of course, there is the cousin of "No worries," namely "Not to worry."
There's that hated "Prolly" again! It sounds like a cross between Pram and Trolley."Clang clang clang, goes the Prolly!"
"No worries" is used extensively throughout Oz. It is used as a sunny, upbeat exclamation of camaraderie and trust. Unlike such expressions as "I'm not a racist, but . . . ," it has no hidden, darker, ulterior connotations. It means exactly what it says. I use it as "No worries," minus the "mate". Australians do not have exclusive copyright over "No worries". Feel free to use it at your leisure!