Being a growing female pre-teen is hard for Diamond Tiara , and it's even harder when she has to keep a certain secret hidden from everyone else.

However after going back to find something in the classroom one day, Scootaloo stumbles upon this little secret of her's, and decides to use it to her advantage. After many pleads the pegasus agrees to keep quiet about what she saw under one simple condition...
...can the earth pony 'best' her?

(Contains: Pre-teen Diamond Tiara and Scootaloo, 'besting' each other in the classroom )