As Rainbow Dash worked to clean up the mess she'd made, Spitfire approached her. "So Crash," she said quietly, "just between us, nopony else around...what the hay got into you today? Really."
Rainbow looked at her and sighed. "It's..." She bowed her head. "Back when I was in flight school in Cloudsdale, there were some jerks who used to pick on me and make fun of me. And they always called me 'Rainbow Crash'." She looked up. "Hearing you guys—my heroes—calling me that..."
Spitfire's eyes widened in realization. "Oh, wow," she said.
Rainbow brushed one hoof with the other. "I got so upset at you guys calling me 'Crash' that...well...I kinda went crazy tryin' to get you to...y'know...drop it." She shook her head. "Maybe I shoulda just told you straight up what was buggin' me."
Spitfire sighed and shook her head. "Honestly? That probably would've made it worse." She chuckled. "Probably woulda changed it to Rainbow Trash."
"Yeah," Rainbow agreed. "That'd be way worse. Still..."
"I get where you're coming from now, newbie," Spitfire said. "I guess...it never occurs to us to think that new Wonderbolts might not be aware of all our traditions. Something we don't even think twice about could, y'know, maybe upset a new recruit." She shrugged. "I guess it's just bad luck that we'd pick the one nickname you had a bad history with."
"Yeah." Rainbow looked up resolutely. "But at least now I know it's just part of bein' a Wonderbolt, so it doesn't bother me anymore." She laughed softly. "Much. I'll just hafta get used to it."
"That's the spirit!" Spitfire chucked her lightly on the shoulder. "Well, I'm off. Later, Crash!"
"Later, Skidmark!" Rainbow replied cheerfully with a snicker.
Spitfire groaned. "Yeah yeah, get it out of your system," she grumbled good-naturedly before taking off.