To achieve the perfect consistency for a Fucktini, you should first chill your cocktail glass. Then, combine the 60ml of vodka, 30ml of lime juice, and 60ml of cranberry juice in a shaker filled with ice. Shake the ingredients vigorously for about 10-15 seconds to ensure they are well mixed and chilled. Finally, strain the mixture into your chilled cocktail glass. This method ensures a smooth, cold texture that perfectly balances the flavors.