----
* BrokenBase: To some, this episode is unpredictable and one of the show's funniest or it's so predictable that it feels like you're getting slapped in the face with how blatant and tedious it is.
* EpilepticTrees: Everyone seemed to assume that this involved time travel due to the inclusion of the word ''future''. Not unlike what happened with [[Recap/MyLittlePonyFriendshipIsMagicS2E14TheLastRoundup The Last Roundup]]. However, unlike in the Last Roundup, ''[[IKnewIt this was true]]''. Then again, it does share its name with the TV series ''Series/ItsAboutTime'', which IS about time travel.
* FanficFuel:
** A maximum-security pit where the most evil creatures are imprisoned? Let's have ''just one'' of those evil creatures escape...
** The "Star Swirl the Bearded Wing?" A maximum security wing of the Canterlot archives where powerful and dangerous spells are kept and ''Pinkie'' was let in?
** Just the fact that time travel via magic is possible. Okay, okay, Twilight blew her one chance with that specific spell, but Future!Twilight suggested there were more time-related spells in that wing. Maybe it only works once ''per point in the past''.
** A town built on (er, near) the gates of Hell, populated with a number of spunky young badass girls and their friends, drawing from a variety of physical and magical powers to keep creatures from said gate in check? [[Series/BuffyTheVampireSlayer And characters named Spike and Angel?]]
** Twilight's really cool birthday present. She wanted information on the cause of a future disaster. Pinkie tells her about a future birthday present instead. Wouldn't it be ''very'' Pinkie-like if she were more on target than anyone realized?
** Another non-Ponyville town, [[UsefulNotes/LosAngeles Las]] [[UsefulNotes/LasVegas Pegasus]], is confirmed, and implied by Rainbow Dash's figure of speech to be on an opposite coast from Fillydelphia.
* FanNickname
** Metal Gear Twilight / Metal Gear Sparkle / Twilight Snake / Solid Twilight / Solid Sparkle / Naked Sparkle / Naked Twilight.
** Gypsy Pinkie.
* GeniusBonus:
** The equations on the blackboard are actually derived from special relativity, and describe... time dilation. One would wonder which DHX Studio animator has a degree in physics.
** Twilight exhorts Pinkie to adjust her [[http://en.wikipedia.org/wiki/Catadioptric_system 9 3/4 in. catadioptric telescope]].
* HarsherInHindsight: The episode, and its moral, take on a whole new meaning after the [[Recap/MyLittlePonyFriendshipIsMagicS4E25TwilightsKingdomPart1 Season 4 finale]]. Twilight freaks out about a possible disaster in the future, and learns not to worry about the future. Turns out that a ''real'' disaster has been brewing ever since this episode. And it's probably for the best that Twilight doesn't worry about it until it's time...
* HilariousInHindsight
** [[http://johnjoseco.deviantart.com/art/Twilight-Snake-v-Boss-Celestia-263379448 This picture]] was made ''five months'' in advance.
** People's reaction to Pinkie as a fortune teller? [[WebVideo/FriendshipIsWitchcraft "She really is a gypsy!"]]
** Upon seeing Future Twilight, Present Twilight exclaims the former is "not scientifically possible", a good seven years before [[WesternAnimation/InvaderZimEnterTheFlorpus Professor Membrane]]'s incredibly [[LargeHam hammy]] take on the exact same phrase.
** Twilight's very statement that another version of her is impossible. Now, let's travel to the future, shall we? There, we'll find this little AlternateUniverse franchise called ''WesternAnimation/MyLittlePonyEquestriaGirls''...
* TheyWastedAPerfectlyGoodCharacter: Many fans were expecting [[EnsembleDarkhorse Doctor Whooves]] to do something special in this episode, even if it was just a FunnyBackgroundEvent. He shows up, but only to act as a normal background pony. He could be maintaining his cover (how funny would it have been to give him shifty, nervous eyes during the scene in question?) but in all likelihood the studio probably thought they reached their [[Recap/MyLittlePonyFriendshipIsMagicS2E15TheSuperSpeedyCiderSqueezy6000 Doctor Whooves nod quota]] for the season and don't want to over do it.
----