1. the practice of being a fannibal in relation to the tv show Hannibal.
Elsa is a fan of the tv show Hannibal; her life revolves around the practice of Fannibalism
2. the complex cultural phenomenon of those who enjoy the tv show Hannibal. Sometimes this phenomenon borders on obsession; many people who practice Fannibalism write fanfiction, create art, or discuss life in relation to the show. Fannibalism usually attracts intelligent and highly engaged individuals.