Add Kahlúa into a shot glass. Carefully pour cream liqueur on the back of a bar spoon and then very carefully pour triple sec on the back of a bar spoon to create the layers.
The B-52 is one of the most popular shot drinks, it origins from the 1970's. The name actually refers to the band The B-52's and not the B-52 bomber.
It is a triple-layered drink that is perfect to show off your layerings skills.