The practice consists of:
(1) pouring liquour with a high ethanol content into a glass or layering the same over a regular cocktail
(2) lighting the alcohol with a match
(3) drinking the liquour in one gulp while it is flaming
Types of injuries that can occur:
(1) burns around the face if the person hesitates
(2) burns from spilling the drink onto clothing or carpet
(3) hand burns from holding a hot glass too long
(4) burns related to an inappropriate glass (Styrofoam, etc)
Risk factors for injury:
(1) inexperience
(2) being intoxicated
(3) being uncoordinated
(4) having a beard or wearing something flammable
Having someone sober and a fire extinguisher handy can be good ideas to avoid complications.