Twilight Sparkled just wanted to get some work done today. Spike and Owlowiscuous were out of the library, and the place was peaceful and quiet. She was about to finish a good hours when Rainbow Dash flew through the window, crying about seeing something she shouldn't have, begging for a memory erase spell.

What could Rainbow have seen that was so bad? Twilight is determined to find out, even if it kills her.

Written for the writers training grounds

-Not a clop. Tagged a crossover and sex for, well, see for yourself….
Bonus points for anyone who can guess what is being crossovered.