Disposable vaporizers contain concentrated cannabis oil that is heated by an attached battery and inhaled. These products are often very potent and are designed to be consumed in 2-3 second puffs. Watermelon Slushie, also known as “Watermelon Kush” and “Watermelon OG,” is an indica marijuana strain made by crossing two unknown parents. Watermelon produces relaxing effects, making it useful as a sleeping aid or appetite stimulant.