1/3 oz of Bailey's Irish Cream (or Irish Cream)
1/3 oz of Malibu coconut rum (or Coconut Rum)
1/3 oz of Kahlua coffee liqueur (or coffee liqueur)
Carefully layer all ingredients, in equal parts, on top of one another in a shot glass; Kahlua first, Bailey's in the middle and Malibu on top.