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.
Fandom Berserk Button: Go ahead and say that the girl in the original game is Peach. I dare ya. Not helped by Peach actually replacing Pauline in the Modern version of the G&W version in Game & Watch Gallery 2.
Germans Love David Hasselhoff: The original appears to be more popular in the U.S. than in its home country of Japan. Nearly all of the notable world records are set by Americans, and not a single one by a Japanese player.
Memetic Mutation: Expand Dong started with an image of Donkey Kong. Expand Dong involves taking cover art from various media, zooming on a character (preferably with a misinterpretable expression on their faces) and putting a caption consisting of sexual things, whilst also making said caption out of bits of the cover's title graphic in a newspaper-ransom-note style.
"Who is Dankey Kang?" originated from a photoshopped image of a Jeopardy contestant's answer.
Nightmare Fuel: In Donkey Kong 3, when Stanley loses a life, all the enemy bugs on the screen swarm his lifeless body, and when they leave, nothing is left but his spray bottle.
Sequel Displacement: Many people born in modern times think that Mario debuted with Super Mario Bros. 1. Likewise, there exists a small group of people who think, or at least once thought, that Donkey Kong made his debut in Donkey Kong Country. Technically they're right, but it was Donkey Kong Jr. debuting as the current Donkey Kong and the original Donkey Kong debuting as Cranky Kong.
Suspiciously Similar Song: The music played during Kong's initial climbing resembles the theme from Dragnet. The music while Mario is swinging a hammer less closely resembles Rocky's theme.