Volcanus

Also known as a "barnacle." This sea creature makes home to a sharp and hard surface, in which it hides in while not feeding. The reason it is called a "Volcanus" is because it resembles a Volcano and a Anus at the same time. They cling to rocks, whales, sharks, and other ocean dwellings. Known for a high bacterial content, most SCUBA divers and snorkelers wear gloves when traversing underwater reefs to protect their hands from being cut. If cut by a Volcanus, the injury will not heal completely for a few weeks, thanks to the high bacteria percentage in the creatures hard surface.

(Volkilnos the Volcanus Voyeur invented the term.)

Damnit, I stepped on a Volcanus and it cut my foot as I tried to board Volcanus Island 1.

by "Sketchy" Mike September 17, 2007

Volcanic rim job

covertly coating ones tongue and then perfoming a rim job on the unknowing victim.

Shawn: So, I heard that paul got revenge on his girl.

Dave: How did he do that?

Shawn: He got her with a Volcanic rim job.

Dave: That's disgusting!!

by Dirty roomie February 24, 2009

Volcanic Shit

When you're constipated and a fart builds up above the stuck shut, creating more and more pressure. The end result is a painful explosion of shit scattered around your toilet basin.

Argh, my ass hurts so much after that Volcanic Shit I had.

by Archaeon December 29, 2012

volcanus

Intense diarrhoea, resembling a volcano. So intense that when fecies exits, it does so at such speed to cause a splash in the toilet water which makes contact with the buttocks.

Man, I had such a volcanus today, my ass was drenched and stinging madly afterwards.

by Blake January 17, 2004

volcanic snowball

This one's good.
It's when you jizz in a girls mouth.
She spits it into your asshole.
And then you fart it back into her mouth.

Quit fuckin' around before I volcanic snowball your ass.

by Lucas Wade May 28, 2005

volcanus

n. An uncomfortable and often daylong affair during which one's bowels feel as though they may erupt at any time, similarly to a volcano. Often accompanied by unusually noxious flatulence including a distinct "hot" feeling. Most of the time, even a full release won't actually bring relief due to the lingering burn and difficult-to-contain aftershocks.

We had to stop a few times on our trip because of Tom's volcanus.

I don't think I can do squats today, I've got some pretty bad volcanus.

by Pcppc September 8, 2013

volcanus anus

The overly large extended butthole right before you shit which resembles a volcano

Holy shit dude your dog has wicked volcanus anus!

by Urban Thinker March 14, 2015