Show a Leg

This somewhat outdated expression means get up and get moving.

You may think that the phrase might have its origins in dance halls, but this odd expression comes from the nautical world. It was used as a command aimed at sailors who were reluctant to get out of bed in the morning.

Its origins go back to the days when women were allowed to stay on board while a ship was in port, or even sometimes remain for part of a voyage. This was to ensure that the crew, who might wish to scarper, were more willing to stay on board and be available for duties.

It was the job of the boatswain’s mate to round up all the work-shy crew each morning by checking their sleeping quarters. When he came to a hammock or bunk that was occupied he would shout, ‘Show a leg!’ and was thus able to distinguish the female legs from those of his hairier, muscly crewmen.

Shake a leg is thought to have a similar origin, but also means dance.

Perhaps this phrase could be revived. It could be particularly useful if you have teenagers who like to sleep in!