Sexual act by nature (fetish) the jamaican spray tan is when one person blends a cup of human feces, urine, and semen saved up over a few months prior, mixes them, and when the person is about to finish during sexual encounters, they will pull it out & surprise their sexual partner by spraying them in the face with the recipe.
Person 1: Yo man, I was bangin' this girl the other night, I surprised her with the jamaican spray tan!
Person 2: I don't want to be friends with you anymore.