A phrase used to acknowledge someone who just perform an admirable feat.
It originated around
2016 in the online
game League of Legends. A very
high ranked NA midlaner, Pobelter, was known for very aggressive and skillful plays that would either succeed and enable him to carry
the game or fail miserably.
He had a large amount of alt accounts that used a similar playstyle, and teammates and opponents would often see those and wonder "is it him?", referring to Pobelter on an alt.
The phrase quickly gained popularity throughout the ladder and on streams, and would end up being asked of anyone who made a
nice play, eventually switching from it's original question form to the proclamation that, indeed, he IS him.
*dude is about to flip the
bottle*
Everyone: Oh oh oh, is it him???
*
bottle lands
upright*
Everyone: OH SHIT HE IS HIM!