Pinkie, on her way to visit Zecora, finds two zebras that look almost identical (save for their height). When she takes them conesntually back to her room in Ponyville, she introduces the twins to Mrs. Cake!
There are a lot of things this show has taught me. When I started watching, I never expected it to affect me as much as it has. But now that I'm here, I don't know what I'd do without you all!