Fill a shaker with ice to chill your spirits and enhance the flavors.

Pour in the gin, vodka, Cointreau, rum, and tequila, one by one.

Add the pineapple syrup for a touch of sweetness and a splash of pineapple juice for that tropical zest.

Shake well until the mixture is well combined and chilled.

Strain into a highball glass filled with ice.

Optional: Garnish with a slice of pineapple or a maraschino cherry for a pop of color and extra flavor.