Related Clues:

• Lead-in to motion
• Crazy in Canczn
• Out of one's mind
• 'Round the bend
• Belonging in a bughouse
• Out in left field
• Touched
• More than eccentric
• Around the bend
• Berserk
• Spanish bananas?
• More than a little off
• Making no sense
• Wacky as can be
• Plumb __