Related Clues:

• Go on a rampage
• Attica uprising
• 'What ___!' ('Hilarious!')
• Public disturbance
• Real scream
• Insurrection
• Hysterical one
• Barrel of laughs
• Result of crowd control failure
• Run rampant
• Run wild
• Public panic
• Blackout worry
• Real knee-slapper
• Someone hysterical