forbidden indulgence (noun) forbidden fruit: immoral indulgence
Sinonime: accelerated, active, agile, blue streak, breakneck, brisk, bunny, chop-chop, dashing, double-time, electric, expeditious, expeditive, flashing, fleet, fleeting, flying, hairtrigger, hasty, hot*, hurried, hypersonic, in a jiffy, in nothing flat,
lick