1/2 oz of 151 proof rum (or overproof rum)
1/2 oz of grand marnier orange liqueur (or orange liqueur)
1/2 oz of Kahlua coffee liqueur (or coffee liqueur)
1/2 oz of Bailey's Irish Cream (or Irish Cream)
Layer the kahlua , bailey's, grand marnier, and finally 151 on top in a shot glass. Serve.