A dragon's adolescence can be more severe than a pony's: bigger growth spurts, bigger bodily changes, and bigger...messes. When Twilight gets fed up with Spike's need to pleasure himself all over the house, she sends him to Zecora, with a firm request that he not return until he's gotten his overgrown libido treated.

Yet Zecora has her own ideas of what constitutes a proper treatment, and she sees Spike's draconic libido as an opportunity. With the aid of a certain potion, she's determined to see Spike's lusts met—even if doing so involves pushing his size and arousal far beyond anything he's ever imagined before.

A commission for Adeste. Coverart by Marik Azemus.

Contains: Hemipenes, hyper cock/balls/breasts+expansion, cum inflation, double penetration, all-the-way-through, light macro+mutual growth, size difference, some muscle growth, and exceptionally poor sexy rhyming

Note: Spike is over 18 in this story.