To volcano is to excrete faeces with extreme speed, often in the form of diarrhoea.
Several hours after Frederick overdosed on dietary pills, he volcanoed his pants during a press conference.
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Someone who keeps clicking the "Random article" button on wikipedia in the hope of finding something vaguely funny or interesting.
The first 10 times he clicked random article he could still communicate, but now he doesn't respond to any sort of stimulation. It's no use, he's a Wikipedian Zombie now.