May be used to describe a person or object that spews out excesses of crap in verbal or physical form.
Word derives from a combination of the relatively harmless cuss shit and volcano; which until just recently wasn't considered quite as negative a word as it currently is (post Icelandic volcano ash cloud malarkey).
by Shitvafjökul July 02, 2010
The act of packing an anus with baking soda then topping off with vinegar to create a shitty, bubbly anal volcano. (Mentos and diet coke can be substituted but with somewhat less spectacular results)
I heard Mark and Brian tried a shit bubble volcano last night, I feel bad for those casino cleaners.
by BrainGear October 06, 2017
A bout of diarrhea that burns so bad that the hair on you asshole gets singed. When your asshole becomes a blowtorch.
by Gollum May 25, 2006