Out of curiosity, this could also mean he is a potato, right?
That's what they all said when Hasbro first introduced Mr. Potato Head .
It could also mean here's one potato?
No. 'Here' is यहाँ while 'this' is यह.
offtopic but hindi name of Plum is "Aloo Bukhara" which implies Potato of Bokhara (City in Uzbekistan)
Offtopic, but in Hebrew, they call potatoes "earth apples." I forget the exact words. Apparently other languages call them "earth apples" as well. I think someone said the French do this, maybe?
Yes. French is 'pomme de terre' (apple from earth).