Pyroblast 

A World of Warcraft mage skill, that causes massive fire damage but takes a long time to cast.

Lawlz Paul I just owned that guy with my Pyroblast.

Pyroblast by Robz June 11, 2006

Probastinating 

The act of masturbating and procrastinating at the same time

Hey man have you done your assignment?

Nah, I ended up probastinating 3 times instead

Probastinating by probastinator October 20, 2010

Pyroclastic flow 

Pyroclastic flow is Ice Cube's gangsta flow. It's his ability to rhyme to cool beats, and gangsta lyrics.

Official definition of Pyroclastic flow by Ice Cube :
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 its wake
Nothing can survive a pyroclastic flow

Pyroclastic flow by Cube fan October 16, 2008

pyrobeastialitynecrophilia 

"when you fuck dead animals while there on fire"

"i found out the real reason my dog died because my neighbor is a pyrobeastialitynecrophilia"
"dude come over with a lighter im taking care of my girlfriends dog perform some pyrobeastialitynecrophilia"

pyrobeastialitynecrophilia by keeganv February 1, 2009

Pyroclastic Flow 

What happens when a volcano blow, thats what happens when ice cube starts to flow

to sum it all up NOTHING CAN SURVIVE A PYROCLASTIC FLOW

Ice Cube- YALL NIGGAS KNOW MY PYROCLASTIC FLOW

Pyroclastic Flow by J-Pol Hong Kong October 16, 2008

Pyroclastic Fart

A Pyroclastic Fart is named after 'pyroclastic density current'; a volcanic event of considerable destructive power.

A Pyroclastic Fart is characterised by several key factors. It is a fast moving jet of particles of varying size and superheated gas. Too dense to be supported by air; it rushes down ones legs and spreads out on the floor in a shock wave. It behaves like a fluid; with lethal effect.

A: "wow man, that was a seriously Wet One!"
B: "Worse than, it was a Pyroclastic Fart"
A: "Oh no..."
B: "yeah, its Pompeii all over again."

Pyroclastic Fart by Jack$ November 20, 2007

pyroclastic flow 

A fast-moving cloud of superheated volcanic gasses, ash, and rock that hug the ground and even the surface of the sea as they rush at speeds of up to 450 mph, destroying anything in their paths.
Pyroclastic flows are usually the result of centuries of pent-up stress within the volcano; thick, sticky magma plugs the vent of the volcano and thus builds greater and greater pressure until it explodes.
Usually the flow is denser than the surrounding air and instead of flowing vertically, they rush along the ground, sweeping over hills and ridges like the said hills and ridges don't even exist.

Pyroclastic flows can reach temperatures as high as 1830 degrees F, and the average temperature is about half that; hot enough to boil the blood in one's body and effectively flash-cook you alive. Some victims are charred while others get fatal steam burns.

In short, a far more forceful and dangerous force than lava and more difficult to escape, due to their speed and intense heat.

Pompeii and Herculaneum were destroyed in 79 CE when Mount Vesuvius exploded, sending a pyroclastic flow barreling toward both towns, searing the lungs and burning the flesh of anybody who would not or could not flee.

May 8, 1902, about 30,000 people were killed in St. Pierre, Martinique, when Mt. Pelee sent a pyroclastic flow over the city.

Mount St. Helens famously erupted with a pyroclastic flow turning the surrounding forest into a lunar landscape.

The fringes of the pyroclastic flow do not always cut a clear line between life and death; survivors at the fringes often endure hideous burns.

pyroclastic flow by Lorelili August 19, 2012