Related Clues:

• Turn to knock out addicts
• Invert bowl over bananas
• Barking heads
• Crackers - or what crackers are required for?
• Crazy!
• Mad - hard fruits
• Mad (slang)
• Heads - fans - fruit
• Crazy (from Brazil?)
• Hard fruits
• Mast — mad
• Fruit — bats
• Edible seeds with hard shells
• "Dang it!"
• Unhinged, in a way