F-bombs away! Former Vice President Kamala Harris is going full auntie mode on her book tour ... seeming to give her political opponents a piece of her mind in no uncertain terms!

Kamala's been touring, promoting her new book, "107 Days," and Monday, she had some wise words for her audience ... "There's so much about this moment that is trying to make people feel like they've lost their minds ... When, in fact, these motherf***ers are crazy!"

The crowd absolutely ate it up, erupting in cheers and applause at what appeared to be quite the cathartic moment for both the former Vice President and the people in attendance at the "Day of Unreasonable Conversation" summit in Los Angeles Monday.

Leading up to her frank observation, Kamala offered a more somber take, warning, "History is goi

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