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.
by Archaeon December 29, 2012
 Get the Volcanic Shitmug.
Get the Volcanic Shitmug. by shit admin October 8, 2008
 Get the Volcanic Shitsmug.
Get the Volcanic Shitsmug.