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.
YMMV: My Little Pony: Friendship Is Magic S1 E16: "Sonic Rainboom"
Fridge Brilliance: Of course the Wonderbolts failed miserably at saving Rarity. They're a show team!
"Funny Aneurysm" Moment: Pinkie trying to eat the liquid rainbow is funny. But, it becomes unintentionally creepy if you're even semi-familiar with the fanfics Rainbow Factory (which is about rainbows being made from brutally-slaughtered pegasus ponies who have failed their flying exam) and Cupcakes (A lovely fanfic about Pinkie essentially being a deranged cannibal.).
Suspiciously Similar Song: The music Rarity choses for her routine is very similar to the waltz from Tchaikovsky's Swan Lake.