The recipe for the family cocktail Carla gives Diane called a Leap Into an Open Grave is: 1 shot vodka, 2 shots Pernod, 1 shot Baileys, 1 shot Poteen, Pineapple juice, 1 egg, and a dash of mint. Poteen is a high proof spirit known as "Irish Moonshine."
In the cold open, the patron talking to Coach about being sober enough to drive home is wearing a Bull and Finch Pub shirt. This was the name of the actual bar in Boston that served as the exterior shot location for Cheers. It is still in operation and is now known as Cheers Beacon Hill.
Carla's family drink, Leap Into An Open Grave, is made with Vodka, Nolly Pratt Vermouth, white Bacardi rum, Cinzano, orange juice, and a whole egg. There are other drinks called an Open Grave, however, this is not what Carla is pouring.
Norm's quip about daddy being rich and mama good-looking was a direct quote from the blues classic "Summertime" by Ira Gershwin and DuBose Heyward.