Maui Martini Protein Shake

1 scoop vanilla whey protein powder (20 grams protein) 

1 (1.5 fluid ounce) best-quality vodka 

2 (1.5 fluid ounce) coconut flavored rum 

1 (1.5 fluid ounce) banana liqueur 

ice cubes 

1 fresh pineapple spear or ring for garnish