Rainbow Dash is pretty confident that her test will be a piece of cake. Twilight, who is unsure about all of this, decides to help the rainbow maned pegasus with studying.
Rainbow is immediately okay with having Twilight help her study. However, studying is not the reason Rainbow accepted the help so quickly. If it wasn't, then what was?
Perhaps she was a little too quick with agreeing to this...

Based off the episode: Testing, Testing, 1, 2, 3. I saw the episode the day it came out, and immediately thought of TwiDash while watching it. And then I thought, I should make a Fan Fiction about it! And that's what I did. I certainly hope you people enjoy it!

Also contains spoilers.