Finally, McKayla Maroney IS impressed -- telling TMZ Sports she loves the new Michael Phelps death stare meme ... and says it takes her spot as the BEST Olympic funny face.
Of course, Maroney became a viral LEGEND back in 2012 thanks to the whole "not impressed" thing -- so, we had to hit her up to get her take on the new Phelps pic taking the Internet by storm.
"Somebody tweeted like, 'McKayla looks like somebody took your spot' .