In the Exeter Book, which is one of four surviving manuscripts of Anglo-Saxon poetry, there are almost a hundred enigmata or riddles, half a dozen of which are sexual in nature. Their charm is in the use of double-entendre, whereby one answer is suggested but another is meant, the reader teased by an innocuous object disingenuously described.

What is the answer to Riddle 44?

A curiosity hangs by the thigh of a man, under its master's cloak. It is pierced through in the front; it is stiff and hard and it has a good standing-place. When the man pulls up his own robe above his knee, he means to poke with the head of his hanging thing that familiar hole of matching length which he has often filled before.