Hit the deck

"Hit the deck" is an expression that originated from naval and military contexts. Literally, it instructs individuals to quickly drop down to the floor or deck of a ship, typically to avoid danger or take cover from incoming fire or attack. In this sense, it emphasizes urgency and readiness to react swiftly to imminent threats or emergencies aboard a vessel.
Figuratively, "hit the deck" is used in everyday language to denote a similar action of dropping down suddenly or urgently. It can imply quickly getting into a prone or low position in response to unexpected events, such as a sudden loud noise or a perceived threat. This figurative usage extends beyond military or nautical contexts to describe actions taken to protect oneself or take cover quickly in various situations, whether physical or metaphorical. Thus, "hit the deck" conveys a sense of immediate action and readiness to respond to sudden challenges or dangers with agility and caution.