[Law turned his hand over and lowered his index and middle finger down to the throat of one such patient, touching beneath their chin to check their pulse.]

It's an ability of mine. I'm an 'Operation Man'.

[Though he couldn't say that Kara's answer told him whether or not she ate a fruit, but most Devil Fruit users referred to their powers as making them an 'X' Man or Woman. It was common enough that he figured it was general protocol.]

That's how my ability works. Any body part I take off of someone will operate independently from the body itself no matter the distance. It can be interacted with independently, but in the end--it's still technically connected to the body.

[Given that he was technically on break, he didn't care about mincing words at all. It was his own time and he had nothing else to do but screw around.]

I've heard it get called magic.