2 oz. vodka
1 Tbsp. frozen lemonade concentrate (or juice of ½ lemon)
Sugar
Run a slice of lemon around the rim of a 4 oz. serving glass then dip in sugar, creating a sugar rim. Fill glass with ice cubes.
In shaker, mix vodka, Grand Marnier and frozen lemonade concentrate and mix well. Pour over ice cubes and serve with slice of lemon.