Related Clues:

• Write a letter to the editor, say
• Spurt
• Eject, as lava
• Have a poor poker face
• Eject, as molten lava
• Expel with force
• Expel or eject, as lava
• Gasp, perhaps
• Change, chemically
• Eject in all directions
• Say "wow!", e.g.
• Throw around
• Shoot out
• Hurl everywhere
• Respond