The Ponyville Six visit Canterlot to watch Rainbow Dash participate in a long-distance race. However, a visit to Twilight's favourite donut shop results in the bookish Unicorn finding herself in a pitched donut-eating battle with a certain pink Party Pony, with disastrous results.
This short story was created as part of a writing audition for the Equestria Online MMO.
I hope you enjoy it as much as the game's staff apparently did! :D