The result of removing tobacco from a cigarette and adding in pubic hair. This pubic hair/tobacco mixture is then repacked back into the cigarette and given out the next time a stranger tries to bum one off of you.
In some variations of the Beirut Cigarette the hair is distributed evenly throughout, resulting in a slow, steady inhalation of the ball hair by the bum. In another variation, the hair is rolled into one big ball and placed somewhere in the middle of the cigarette with tobacco on either end. The result is a sudden spark and a "poof" of burnt hair when the smoker gets to the right point.
-"Aw, what's that smell?"
-"That kid just lit up the Beirut Cigarette!"
-"Hey nobody look over here, I'm shaving off some pubes for the Beirut Cigarette."