What's the definition of a pyroclastic flow
That's what happens when a volcano blow
That's what happens when Ice Cube starts to flow
Red hot lava mixed with saliva
Pulverising everything in it's wake
Nothing can survive a pyroclastic flow
And no one will survive this one.
Lyrics taken from http://www.lyricsmode.com/lyrics/i/ice_cube/what_is_a_pyroclastic_flow.html