fly
The ski cross is a mad dash over clifflike jumps, around hairpin turns, through gullies and down steep slopes. Four racers fly down the course together, jostling for position at highway speeds.
flying off the shelves
Doctor Barbie and Computer Engineer Barbie currently fetch top dollar, but Architect Barbie dolls aren’t flying off the shelves because it’s not as glamorous or as lucrative of a profession for women.
Phrase
to express yourself in a way that excites or angers others
let fly
Everyday on Reddit, millions let fly with cat pics, tales of social awkwardness and Star Trek references. This is the war for "karma points": the crucial upvotes and downvotes that govern how content is displayed on the site.