It's a very American thing to pepper your speech with euphemistic initialisms, a lot of people outside the US find it cheesy and annoying.
I wish I could cleverly work in a "QED" here (from Latin) but it just doesn't fit.
By the way, QED is just a calque from Greek. (Like most things Roman...)
As an American, I'd find it hard (at least in my circles) to find an American who doesn't find it cringe worthy.
In fact, I don't think I've heard anyone use that term in at least forty years.