Twilight Sparkle has been friends with Rainbow Dash for a long time. Over that time Twilight has learned that beneath her bold and brash attitude that the cyan pegasus actually has quite a brilliant, observant mind that's keen to pick up information. It's because of that that Twilight finds it even harder to comprehend that a specific gap in Rainbow Dash's knowledge is so monumentally vast. She certainly has her work cut out for her.

A one shot based on a random funny idea about Rainbow Dash and just felt I had to write.

Contains references to sexuality and sex, and a sprinkling of Twidash.