Makes like Eyjafjallajökull

• Expels forcefully
• Pours forth
• Unloads, as venom
• Spits out
• Ejects, as lava from a volcano
• Shoots, as lava
• Utters, as invectives
• Speaks nonsense
• Emits, as expletives

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: spew )