Related Clues:

• Blows one's stack
• Flies off the handle
• Breaks out
• Loses one's temper
• Emulates Etna
• Pops one's cork
• Lets off steam
• Bursts forth
• Totally loses one's cool
• Makes like a volcano
• Blows, volcano-style
• Flares up
• Blows up like volcano
• Breaks out abruptly
• Blows up and out like volcano