The Sidewinder Fang
1 1/2 oz. lime juice
1 1/2 oz. orange juice
1 1/2 oz. passion fruit syrup
3 oz. club soda
1 oz. Demerara rum
1 oz. gold rum
Orange peel
Blend with 1/2 cup crushed ice for 10 seconds. Pour into a large snifter filled with ice cubes. Garnish with a long strip of orange peel.
Of course if you are making this at home you would want to skip the Orange Peel, and you would likely have trouble finding the Passion fruit syrup, in which case extra OJ is recommended. Looks like about 20% rum, or about 8% alchohol, giving it about 1 1/2 times the kick of your average beer. I wouldn't really classify it as a girly drink, but it ain't no Long Island Iced Tea.
This drink is actually a variation of the Cobra Fang, which uses light rum instead of Demerara rum, not much of a difference in alcohol content, but would give it a slightly different flavour. Another variation of the same drink is the King Cobra's Fang, which substitutes Bacardi 151 for the light rum, making it somewhere around 12% alcohol, or worth about two good beers.
Apparently the drink DOES exist (I saw it on a thread somewhere in FL discussion and rapidly saved it)