Backdraft

Pour 1 oz. of Grand Marnier in the shot glass. Light it, let it burn for about 10 seconds, then cover it with your hand for about 10 more seconds. You should feel it suck your hand. Uncover it, slam it, then cover it again for another 10 seconds. You should feel it suck your hand again. Uncover it and inhale the fumes. This gives a slight high.