A reefer is a colloquial term for a marijuana cigarette. It is made by rolling dried cannabis flowers in paper, similar to a traditional cigarette. Marijuana contains compounds called cannabinoids, with THC (tetrahydrocannabinol) being the primary psychoactive ingredient that produces the "high" sensation. Reefers can be consumed for recreational or medicinal purposes. In many places, the legality of marijuana varies, with some regions allowing its use under specific regulations. Users may seek relief from various conditions, such as chronic pain or anxiety, while others may enjoy it for its relaxing effects in social settings.