yellowstone geyser Share definition Flag when a girl is jerking you off and you cum in the air and the girl has to catch it in her mouth Yeah me and mrs.carter were doing a Yellowstone geyser on Tuesday yellowstone geyser by urgrandpais2hot4u November 24, 2009 0 0 Get merch Get the yellowstone geyser mug. Buy Now — $32.95 See more merch