Possible Clues:

• Find chunk with pineapple — or lose it?
• Throw a wobbly as a 19 crashes
• Become very, very excited
• Try fruit flip
• Get very excited
• Try to stop an idiot, almost do one's head in
• Run amok
• Turn round the bend and become very angry
• Flip one's lid (sl.)
• Turn hand, getting fly off the handle