Broken

"L-Lightning Dust?" choked out Rainbow. Out of all the ponies that could have been under that cloak it had to be Lightning Dust?!

Lightning stepped up to Rainbow and said, "Are you scared? Maybe you think I'll just kick your fat flank out of Ponyville because of what you did to me?"

"N-no! Of course not!" Rainbow stammered, "I'm just surprised to see you here... that's what." The rainbow-coloured pegasus narrowed her eyes and glared at her former friend.

"And I'm not fat," she added while holding her stare directly at Lightning.

"Prove it then!" the other mare laughed evilly, "I have a challenge for you, Rainbow Dash." Rainbow winced at the way Lightning said her full name with disgust. When they had been friends, Dusty always called her just Rainbow or only Dash alone. Hearing her full name like that unnerved the mare.

"So what's your challenge then?" Rainbow asked, looking at the other pegasus. She noticed that Lightning's coat was a bit ruffled and that her mane was messier than usual. Maybe I shouldn't have gone so hard on her... Rainbow wondered as she examined the pony's unkempt body.

"I challenge you to beat your records." Lightning smiled, but not pleasantly. "Do the Sonic Rainboom five times in a row and then that means you are better than me. Then I will leave you alone forever." she continued.

"I can do that, no problem. But if I don't achieve it, which by the way I WILL, then I will admit you're better than me and will get you a chance at the Academy." Rainbow replied confidently.

"DEAL!" both ponies agreed as they spit on their hooves then bumped them together.

"How uncouth!" Rarity stated after that.

"Come on Rares, we don't want to miss out on watching Dashie totally rock those five Booms!" Pinkie tugged her posh friend along eagerly.

Applejack, Twilight and Fluttershy joined them as they sat on the grass in a clearing near Ponyville. Here they would watch their friend do Lightning Dust's challenge.

The orange-maned pegasus appeared soon after the five friends had settled down. There was no way that Lightning was going to miss out on seeing her enemy fail.

All six ponies were seated when a rainbow filled the sky. Twilight and the other ponies cheered and "WHOO"ed for their brave friend. Lightning Dust just smiled knowingly.

Rainbow Dash shot up in the sky creating a rainbow streak behind her. She stopped high above her friends, so that she was ant size if looked upon.

Rainbow Dash, well, dashed down in amazing speed. She was suddenly stretched out and a second later, a thunderous "BOOM!" broke the peaceful silence of Ponyville.

Rainbow continued doing Sonic Rainbooms until she was on her last one. Below, Lightning was getting worried that maybe, just maybe, Rainbow would complete her challenge successfully. But it was obvious that the rainbow-maned pegasus was getting tired with every Rainboom she did. By now she was panting.

"OK here goes..." Rainbow said to herself uncertainly, the roar of her friends' cheering loud in her ears. She flared her wings and set off.