Hyperventilate(verb):
1: to breathe abnormally fast or deeply as so to effect hyperventilation.
2: to breathe in this manner as from excitement or anxiety.

Hyper(adjective):
1: Having a very excitable, or nervous temperament; high-strung.
2: Emotionally stimulated or overexcited.

It's Pinkie Pie's birthday. Her twenty-first, to be precise.
Wait.
If it's her birthday, then who's planning?
None other than her girls, of course. Although, this time, Twilight has decided to tell Pinkie what they're doing. After all, they don't want a repeat of Pinkie's sweet sixteenth.
Twilight and the gang are hyperventilating. Pinkie is just hyper.

No cover art yet, because copyright and whatnot should be respected, unless you're quoting. Once I draw one, I will post it, and onto my DA as well.

It all started when Twilight borrowed some ancient manuscripts from the personal library of Princess Celestia.
Among them was her old diary.
After much pleading and begging from Spike, she returns it.
Yet the newest princess of Equestria has a few tricks up her sleeve.
No cover art yet, but I will upload one as soon as I make one.

Derpy Hooves. The mailmare of Ponyville, the clumsy one, and the muffin-lover.
These are only a few of her many titles.
What about Doctor Whooves' wife?
Here is the long lost story of their courtship, and how their daughter, Dinky Doo, came to be. Well, the cleaner version.
Tagged romance because there is a lot of romance in this. Also rated teen for some mentions of mature content.