When a guy repeats what you say?

So I have this guy friend who sometimes repeats stuff I say. Like whenever I'll calmly say something he'll repeat it in the same tone like the way I say hello whenever I do that he'll say it in the same voice I did.
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Or when I'll calmly ask for a favor from someone like "could you please pass the water?" he'll repeat it the exact same way I said it

When a guy repeats what you say?
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