In the heat of the moment, some ponies have a habit of letting things out. Sometimes they are minor things that most just shrug off and forget about in a matter of milliseconds. Sometimes they are things that, once revealed, shake the very foundation of their existence.

Rarity's latest revelation falls into the latter.

Zecora's helpful nature has won her many good friends in Ponyville, but they're in for a big surprise when Zecora tries to show them what the best medicine really is. And no, it's not laughter.