>the mane6 enjoy doing everything ever until they meet a disabled pony
>although they push aside the disabled pony's attempts at still being useful in society, the mane6 eventually come around and use the word "handicapable" a lot toward the end whilst feeling bad about how they treated the disabled pony, and eventually, the episode ends with a montage of every pony in ponyville banding together to fix some ramp or some shit
>eventually the handicapped pony becomes such a recurring character that it's essentially the 7th element of harmony, the element of overcoming adversity

tl;dr "on a very special episode of MLP: FiM..."

Is the handicap [spoiler]mentally challenged[/spoiler] or [spoiler]being crippled[/spoiler]?  You decide.