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: Ultra Fast Pony
Cliché Storm: In "The Longest Wedding", DJ 3-Pones hands out well-worn truisms ("With the power of friendship, anything is possible!") like they're cheap cigars.
"The Canon Has Misfired", released August 2012: Twilight asks Rarity for a stealth mission outfit, and Rarity volunteers a gimp suit. "Magic Duel", broadcast November 2012: Rarity's "dangerous mission outfit" for Fluttershy is a black, hooded suit with gratuitous bunny ears and no holes for Fluttershy's wings. Coincidence? ...Probably.
Episode 2, "Fillen' Dem Plot Holes, Bro!" includes one caption: "I miss the days when plot hole meant something different" (i.e. the days before "plot" was slang for "pony butt"). Much later, "The Longest Wedding" featured the exchange:
Cadance:The power of love will fill all plot holes! Shining Armor: Yes, Cadance! Fill my plot hole with love!
In "Faith to Faith", Pinkie "makes LittleKuriboh proud" by quoting "Shut up and take my money!". While everyone else finds it hilarious, Applejack thinks it's a comedic copout. The next two episodes ("Reading to Rainbow" and "Pirate Shipping") both featured stingers involving scenes redubbed with Futurama audio.
"The Cheesen One" (released September 2013) suggests that cheese is important to Rainbow Dash, since it figured prominently in her mother's Final Speech: "Life is like a wheel of cheese... and you have to eat the cheese before it gets moldy." In "Pinkie Pride" (released February 2014), a giant cheese wheel features in Rainbow Dash's birth-iversary celebration.