Hash Oil, Honey Oil, Sticky. Butane or Isopropyl extracted THC , dark to golden in color. Goo has a honey to tar like consistency, and is usually vaporized via a hot stove, and inhaled using a bic pen or similar utensil. Highly potent with an average THC concentration of 50-100%, although the latter is usually achieved with an isomerized and whipped oil, turning into "budder". The high is much clearer and clean compared to regular marijuana, it also lasts longer.
Man, I took 5 goo rips and was high as hell for hours.