Brass monkey

Like many other rum drinks, this one originated from the sea. the brass monkey, was a metal grid in which the cannonballs were stored. When the cold hit, that grid would contract, which would cause the bullets to spread.

A piece of clear rum;
A piece of vodka;
Four parts of orange juice;
An orange slice;
Ice cubes.

Fill the tall glass with ice cubes and pour the rum, vodka and orange juice into the glass.
Stir carefully and then serve, decorating with an orange slice and a straw.