Fill a highball glass with ice to chill the glass.
In a cocktail shaker, combine rum, vodka, peach schnapps, blue curaçao, and lemonade.
Add ice to the shaker and shake well until the mixture is chilled.
Strain the cocktail into the prepared highball glass.
Top with a splash of pineapple juice for a tropical twist.
Stir gently to incorporate the pineapple juice into the drink. Serve immediately and enjoy.