Fluttershy wants Dash to enjoy her Hearthswarming vacation this year so she asks Twilight for a special potion to spice up their sex life. It goes wrong in the most expected of ways: Dash doesn't care for rules when it comes to magical dick potions and bigger is always better for the dimunitive pegasus.

She'll soon find out that maybe there could be 'too much of a good thing' when her newly gained tools keep growing. And growing. And growing.

But it's Rainbow Dash so she'll find ways to not worry about it. She has three days before it could be an issue anyway and she's going to use it as much as she can. Plus Twilight fixes everything anyway, why not get crazy?

Contains: Potion Gained Dick, Hyper Dick and Balls, Immobility (Later Chapters), Multidick (Later Chapters), Sex stuff