Are you saying I am not allowed to post in humor?
(that is modern Hebe not Yiddish, saying p lease be quiet, not offensive)
1. You're allowed to post whatever you like, and I never said anything to the contrary.
2. Like many expressions, that Hebrew expression is dependent on context; it can be used in a humorous way, or in a dismissive and condescending way.
3. As a general rule, when you're speaking in one language, and someone posts a pithy response in another language, a language no one understands... it's generally done as a slight... as it doesn't constitute an attempt at real commnication, and it's a weird thing to do.
Conclusion:
1. If I post a silly joke in the middle of a serious thread, it's quite possible no one will laugh, and that people may be offended.
That goes with the territory.
It should be expected.
2. If someone is speaking in English, and you respond with a dismissive phrase in Hebrew, telling them to be quite, it's quite possible no one will laugh, and that people will be offended.
That goes with the territory.
It should be expected.
3. We're all free to make jokes, and if nobody gets the joke, that should be expected.
...