First off, happy early St. Patrick's Day! No idea who the guy was, but thinking of him as the Saint of drinking alcohol is good enough in my book. Oh yeah, and the whole Irish thing. So combining the two, we get Irish drinks; here's the delicious Irish Car Bomb.
But first, a few things. It's called an "Irish" Car Bomb for a reason. Use Irish ingredients, like Guinness (a must), Bailey's Irish Cream, and Jameson or another Irish whiskey. Sorry, no Jack Daniels. Also, pour the whiskey first, then the cream. If done correctly -try pouring over an upside down spoon- the cream will form a top layer separate from the whisky for a more aesthetic look.