show a leg

“She’s not the sexy-slutty type. She’d rather show a leg. She’s more of a fashion girl than a slutty girl.”

"Get 'ee up and come show a leg, now."

"Show a leg, now!" cried the Captain to the men who were busy with the dinghy.

“I’ve still got spray paint on me,” Bella said, lifting the first dress to show a leg speckled in green.

Show a leg there, if you don't want the rat's tail.