flowing volcano
n.β Β«There were things I didnβt figure on, however. I never thought, by playing online games, that I could learn how to build something called a “flowing volcano,” which, apparently, is usedβquite effectivelyβto smoke hash.Β» ββReach out and insult someone” by Kevin Burton Aspen Times (Colorado) June 18, 2007. (source: Double-Tongued Dictionary)