1/3 shot Kahlua
1/3 shot Milk
1/3 shot Bacardi 151 proof rum
Pour in the Kahlua. Layer the milk on top of it. Then float the Bacardi 151 on top of the milk. Light the top of the shot. Let it burn for about 10 seconds, blow it out and shoot it.
Be careful not to spill the 151 proof rum, or you will wind up with your hand, the shot glass, and anything else near you on fire.