Also slang for sex in certain parts of england.

example:
Jesus and Mary approached bethlehem tired and exhausted seeking an inn for the night.
Said Joseph to the innkeeper, "Good Sir, I need a room as my fair wife Mary needs length".
"I have but a stable for ye." said the innkeeper.
"That will do." said Joseph. The innkeeper winked at Joseph, and lo, the wink was cheeky.