This is when you stand someone upside down on their head and shoulders right before they have to shit, urinate in their butthole, then kick them in the stomach so hard that they shit with a volcanic-like explosion.
That jerk learned who was boss after I kicked the shit out of him and he tasted his own Muddy Volcano.
by Johnny Ock October 20, 2006
When you are having rough Anal sex until the person receiving it has to diarrhea. When the diarrhea comes the person does a handstand shooting poop all over, looking like a Volcano
by Guacamole Weiner Jew June 25, 2020