Possible Clues:

• Head butt, e.g.
• A clueless clue, by definition
• Figure of speech, eg bitter sweet
• Axes employed by old fool, in a figure of speech
• For example, living death doctor observed during year in county
• Neat end to controversy over defective figure of speech
• Unknown dimwit follows up neat combination of contradictory terms
• What a contradiction, in diction, to be so stupid in the way of O, perhaps
• Pretty ugly, e.g.
• Apparent-contradiction figure of speech