A "spliff" refers to a joint that contains both marijuana and tobacco. The term is particularly popular in Europe and Jamaica, where this method of mixing cannabis with tobacco is more common than in North America. It’s believed that "spliff" may have originated from Jamaica, where smoking weed and tobacco together is a common practice. The mix of tobacco and weed gives users a more mellow high than pure cannabis and extends the burn time. The term has now become more widely used around the world, often associated with reggae culture and cannabis use.