Oxymoron

Some time ago, cuddlymogwai's mother read to it a list of amusing oxymorons, such as "pretty ugly","open secret", and "clearly misunderstood".

Well, cuddlymogwai used to be puzzled by the following words in its visa: "Leave to Enter the United Kingdom".

(Cuddlymogwai eventually figured out that "leave" can mean "permission", as in the poem by Tagore: "Do not go, my love / Without asking my leave." )