Related Clues:

• Lunatic who head-butts one
• New, perfect fruitcake
• Madman ending in prison, say
• Last one in institution's out-and-out loony
• Ending in institution, total psychopath
• Knight, say, is a madman
• Ultimate in madmen, say?
• Eccentric note accompanies issue
• Loco one's noticed at the front, coupled to express
• Eccentric name, say
• Initially Nigella put out fruitcake
• Point and say 'loony'
• Lunatic (sl.)
• New leader, complete lunatic
• One regarded as mad in northern state