Related Clues:

• Come unglued
• Have a cow
• Get excited
• Rant and rave
• Get really angry
• Throw a fit
• Lose control
• Blow a gasket
• Totally lose it
• Flip one's lid
• Get really jazzed
• Become excited
• "Avoid using the expression '___' ..."
• 'Feel free to!'
• Have a cow, so to speak