Hammer down
Floor it — pedal to the metal, full speed.
Definitions
Putting the hammer down means stomping the accelerator and running flat out. The 'hammer' is the gas pedal. Used as both an instruction ('hammer down, we got daylight all the way to Toledo') and as a sign-off wishing the other driver a fast clean run. The CB shorthand for 'go, go, go.'
Hammer down In A Sentence
Origin & Usage
1970s trucker slang. The 'hammer' metaphor for the accelerator pedal comes from how the pedal strikes down to engage full throttle. Cemented in pop culture by C.W. McCall's 1975 hit 'Convoy.'
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