Rainbow Teased is a short story about the first encounter Rainbow Dash ever had with Fluttershy. When I saw Cutie Mark Chronicles I became curious as to why Rainbow Dash would want to defend Fluttershy's honor in the first place, since they didn't really seem that close in the beginning of the show, so I made up my own story of how they met. It's just a cute story with nothing really serious or mature in it. Rainbow is being told tall tales by other kids in her class, much like the teasing that older siblings dish out on their younger siblings, and she runs into Fluttershy, who helps her to forget her worries and establishes Fluttershy as somepony whose honor Rainbow would wish to defend.