Teenage Mutant Ninja Horses (PMV)
That moment you realize Twilight is Leonardo and Donatello put together.
Imagine the technodrome with Krang, Shredder, and their foot soldier robots taking a portal from Dimension-X into Equestria. Who do I have to pay to animate this scenario? Imagine Krang's reaction when his army is smashed by pastel ponies. Shredder would try to use the anti-mutagen gun, thinking the ponies are human-horse hybrids.
Warning: Implying the sovereign of Equestria and avatar of the sun is a rat is not recommended if one values solar flares not hitting your house. Even if said rat is a koan spouting ninja.