Here's how to make a "car bomb" according to drinksmixer.com
3/4 pint Guinness® stout
1/2 shot Bailey's® Irish cream
1/2 shot Jameson® Irish whiskey

Add the Bailey's and Jameson to a shot glass, layering the Bailey's on the bottom. Pour the Guinness into a pint glass or beer mug 3/4 of the way full and let settle. Drop the shot glass into the Guinness and chug. If you don't drink it fast enough it will curdle and increasingly taste worse (this is an important fact)

As the title of this blog would suggest, Heathen and Wes sampled car bombs for the first time last Sunday thanks to Santa.  Here's the video.