Popcorn Volcano Share definition Flag Jumping in your movie seat with a container of popcorn causing the popcorn to fly up in the air like a volcano. While watching Halloween X there was a scary scene that resulted in several popcorn volcanoes. Popcorn Volcano by kidgoat April 24, 2011 0 0 Get merch Get the Popcorn Volcano mug. Buy Now — $32.95 See more merch