I noticed the difference between my friend and I when I replied to a friend with the number 2, while showing the back of my hand. Being British, he promptly did the same gesture back at me.

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[–] 3 points 3 months ago*

In my experience in the US it’s interchangeable. Typically palm out is used to convey more cheerfully or for emphasis, while palm in is more casual or less emphatic.

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