Here's Steve Buscemi at a charity event in NYC on Friday.

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Steve helped out by answering phones -- and seemed to be enjoying himself.

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But then things took a dark turn.

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One caller dared to challenged the man...

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... Leaving him startled.

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In fact, it left him wondering why he ever agreed to do this in the first place.

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You may think this is just Resting Buscemi Face, but this call concerned him greatly.

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It left him with several questions.

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If you ever find yourself on the phone with Steve Buscemi, please take it very seriously.