The term 'Certain Jamaican Believer' refers to a Rasta, which is a follower of the Rastafari movement. This movement originated in Jamaica in the 1930s and is based on the teachings of Marcus Garvey, a Jamaican political leader. Rastas believe in the divinity of Haile Selassie I, the former Emperor of Ethiopia, and follow a lifestyle that emphasizes natural living, vegetarianism, and the use of marijuana for spiritual purposes.