Wiktionary
a. (context simile English) Extremely quick adv. (context simile English) Extremely quickly
Wikipedia
Quick as a Flash was a 30-minute radio quiz program which featured drama segments with guest actors from radio detective shows.
Created by director Richard Lewis and emcee Ken Roberts, the program debuted over the Mutual Network on Sunday, July 16, 1944. Sponsored by the Helbros Watch Company, the show was produced by Lewis and Bernard J. Prockter with scripts by Gene Wang. Music was by Ray Bloch and the Helbros Orchestra.
Six contestants from the studio audience competed for cash and other prizes. Clues were presented in the form of dramatic sketches covering such subjects as current events, movies, books and historical situations. With a buzzer, a contestant could interrupt at any time to submit an answer.
During the Helbros Derby, a guest detective from a radio mystery program put in an appearance. Frank Gallop and Win Elliott were announcers.
The series ended on June 29, 1951. Approximately one year later, the series made an attempt to go on television.
Usage examples of "quick as a flash".
As quick as a flash there leaped to his mind nine Martian sounds, but as quickly faded as he answered that this was a secret he must not divulge.
Then, as quick as a flash, came an expression of overpowering fear.
But our hero was watching him with the eyes of a hawk, and quick as a flash he caught the rascal by the coat sleeve.
As we walked, there was the usual rustle of lizards scuttling out of the way: little fellows, quick as a flash and colored like all the jewels in Tiffany's, and big gray ones that hiss at you as they plod off.