Ya-ya/ Ya-yas

[Pooh]

What doed "ya-ya" or "ya-yas" mean?

I checked dictionaries but only got that "ya-yas" is the plural form of "ya-ya"
and some said "ya-yas" while others said "Ya-ya's". I don't know witch is ritht way to write it. And I don't know the exact meaning and how touse them eigher. Could you kindly enough to show me how to use them?

Thanks!!

[Pooh]

"I have people flipping me off all the time but because I'm from New York,
I get my ya-yas out that way and I get to flip them."

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What does this mean?

[Mordant]

Apparently, it means "to vent frustration." This is my first encounter with it and hopefully my last. lol I got this from the Urban Dictionary, which confirms the obvious: this is slang.