I would love to see this happen! Rainbow’s an expert in aerodynamics and she has to teach Twilight how to fly through diagrams and lectures. It would shock every one of her friends and she’d just shrug it off like, “this is the easy stuff, wait until I talk about how rainbows are made and the science that goes into that.”

@Background Pony #BB96  
I’ve had a fanfic idea bouncing around for like 5 years. One of the key points of the setting is that Equestrian ponies are the descendants of human experiments to make pegasi. We needed to make them much smarter than current IRL horses to handle flight, but somewhere humanity got wiped out and our enhances ponies survived to become the Equestrian ponies we know and love.

i would shit a brick if dash was an expert at aerodynamics

,,C’mon Twilight!’’- I said.- ,,This can be so much funny!’’  
,,I know,I know Tiger. But I don’t think I need those lessons of flying.’’  
I smiled.  
,,Trust me. You are in great hooves.’’ I said.  
,,Really? In this school? I still don’t sure…’’ Said Twilight Sparkle. Meanwhile I pushed her with my magic to the empty,blue house. What was supposed to be school.  
,,Have fun!’’ I said and I walked away. Twilight gulped and enter to room. When she open the door she heard raspy,female voice.  
,,Hello student. C’mere!’’  
Twilight still not sure what’s she doing. She walked to the ,,class’’. She notice Rainbow Dash drawing something in whiteboard.  
,,Uhm. Dash? What’s that?’’  
Rainbow ,,Teacher’’ Dash giggled and said:  
,,Oh. This? Just. You know. Math.’’  
Twilight groaned.  
,,Really?! Why you can’t just show me how to fly?!’’  
Rainbow Dash giggled again.  
,,Oh no,no,no,no,no,no,no Twilight! That can be just too easy! I will leave the ,,Test’’ to the end of this lesson. We need to start of primary things. Like. Oblique arrangement of wings for 10¤ if you about to fly. And if you started flying. You just need to oblique arrangement of wings for the 130¤. Speed limit needs to be 40-100km. Oh. And don’t forget about wind electricity. If you forgot about it. You can broke your wing or it can happend something worse. Easy,right?’’  
Twilight gulped. Rainbow smiled.  
,,Im so glad you understand. Now. Let’s started something difficult like…’’  
Twilight listened all of Rainbow’s math lesson. She doesn’t understand anything. But she acted to her friend like she understand. She lies only to make her happy and finish this lesson faster.

I wanna write here a little fanfic. I hope you won’t be mad.

Meanwhile, in an alternate universe…

Twilight : Rainbow , you are such an egghead!

Rainbow Dash’s School For Flyers.
 
Twilight Sparkle : intimidating Well, I’m gonna die!