Place a shot glass on a flat surface to prevent tipping during preparation.

Pour 0.75 ounces of prickly pear liqueur into a jigger, then transfer it to the shot glass.

Cut a fresh lime in half and squeeze out the juice using a citrus press, collecting at least 0.5 ounces.

Measure out 0.5 ounces of freshly squeezed lime juice and add it to the shot glass with the liqueur.

Add 0.5 ounces of coconut rum to the mixture in the shot glass.

Measure and pour 0.25 ounces of pineapple juice into the shot glass.

Use a bar spoon to stir all ingredients together for about 10 seconds until fully blended.

Optionally, add ice to a cocktail shaker, add all measured ingredients, shake for 5 seconds, then strain into a chilled shot glass for an extra-cold shot.

Serve the shot immediately, garnished with a lime wheel or salt rim if desired.