[Rainbow Dash goes stock-still for a second, then draws herself up in equine indignation with a snort.]

That's the worst thing I've ever heard! I am the best! I won the Best Young Flyer competition, didn't I? Best, right there in the title! Nopony in Equestria can outfly me, and if anypony wants to try, they're going to have to WORK for it!