I was horrified the first time I heard the term "that's jewish" to mean, "that was a cheap ripoff", like when the system does a reboot out of nowhere when you're about to win a game or something. However, it was said by someone who I am 100% certain has no malice or bigotry about the Jewish faith, culture, or people. Then I found myself stifling a giggle.
I still cannot bring myself to use the term, but I think it's kind of funny. Still, it's unfortunate that people grow up using a term like that as slang, not quite grasping its implications and power to offend.
The first time I heard the term "wife beater" in reference to a white tank top undershirt, I was similarly horrified, and then I was similarly uncontrollably amused. I've caught myself using the term before, which is very embarassing if I'm around people who don't know what kind of person I am.
This is not how everyone sees it, but my personal perspective is that I am not offended by a word. I am offended by the malice or persistent ignorance of the person using a word. If my sister uses the term "wife beater" in reference to an undershirt, I know that she has complete awareness of the gravity of wife beating, and her use of the word is dark humor that does not preclude her horror at the actual act of wife beating. I know that if my sister says something about how her company is jewish for giving her a 3% raise when she expected a 5% raise, I know she is making fun not of jews, but of the stereotype itself. I know this because I know her. I know she is not ignorant or malicious.
Now, if a stranger uses those terms, I might be inclined to give him the benefit of the doubt, or I might not. It's certainly going to raise a flag, and prolong a good impression or cause a negative one. It's going to make me cautious about a person until I learn that he or she isn't a closet bigot or ignorant as fuck.
That's why I save my bigot humor for people who know how completely not bigoted I am (well, except against stupid people).
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I am a delicate fucking flower.
https://beacons.ai/jesskent