An incredible clip of Bruce Willis has come back to light after his recent dementia diagnosis ... one where he says there's nothing in this world that can keep him down.
The video comes from his 2018 Comedy Central roast ... hilariously digging at everything that's "attacked him" over the years -- from terrorists to male pattern baldness and divorce lawyers, but nothing's stopped him because he's "Bruce f***ing Willis."
He also settled the score on whether "Die Hard" is a Christmas movie -- thank God.
It's a fantastic speech ... one his adoring fans started sharing on social media shortly after his daughter Rumer broke the news his aphasia has progressed to frontotemporal dementia ... commonly known as FTD.
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As we reported, she said the diagnosis was a painful one, but called it "a relief" for the family to finally have some sort of answer ... adding "challenges with communication are just one symptom of the disease Bruce faces."
Bruce's other daughter Scout shared her feelings Thursday night after the news broke -- saying she's "emotionally tired and a bit overwhelmed," but thankful for everyone who has shown support.