These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Americans Hate Tingle: Despite being a hit worldwide, the reception for "Gangnam Style" in Japan didn't set off massive hits, though it's fairly popular on Nico Nico Douga. It helps that Japan is used to K-pop, for the most part, and parodies (or anything that isn't squeaky-clean, mainstream k-pop) don't do as well as actual k-pop. (There was also yet another diplomatic incident between the two countries, which set off nationalist protests against anything Korean.)
Big Lipped Alligator Moment: The video for "Gangnam Style" is made of them, but for Western audiences, the pelvic-thrusting, manically grinning man in the elevator takes the cake. note It's South Korean comedian No Hongchu and the pelvic-thrusting is his trademark "jeojil (lewd) dance". It's incredibly funny for Korean viewers.
Also, PSY on the toilet.
PSY in the jacuzzi as well.
Crazy Awesome: Who would've thought that such a crazy music video/artist would become so popular?
Discredited Meme: We have to admit, it's a pretty awesome song, but when even Psy is getting sick of it, there are definitely signs of this.
Jumping the Shark: The 2013 Super Bowl XLVII ad he made for Wonderful Pistachios reworking the song as "Crack it, Gangnam Style" pretty much marked the end for remixes and parodies of it. Its only major subsequent appearance was in marketing for the 2014 animated movie The Nut Job, a good year and a half after the song became a meme, are only beating a dead horse at this point.
To say nothing of Shake It. Oh dear God, Shake It.
"Hangover" will not leave your mind.
Fridge Brilliance: "Gentleman" is already filled with PSY being a total jackass... but something Anglo-American audiences may not notice is that he's already being a jackass five seconds in- he's making people older than him carry all his shopping. A pretty big no-no in most Asian cultures (and others as well, though it's deathly serious in East Asia).