Spike is only a baby dragon. Everypony in town knows that. However, Rarity has been doing some research into dragons, and she's begun to wonder how it is that Spike, nearly nineteen years old, is still stuck in the body of a toddler. Twilight shares her concerns, and along with their friends, they set out to make Spike grow up a little more. Unfortunately, nothing is ever so simple, particularly not in Ponyville, and a whole flotilla of ships sets sail on a course for total disaster.

Part of the Wibblyverse continuity.

Sex tag for misinterpreted dialogue, innuendo, repressed memories of walking in on your mother, and pretty much everything except actual descriptions.