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1.
A potent mixed drink, usually part of a late night drinking session at dive bars or pubs between a young man and his friends, often consumed as a statement of solidarity. Drink is made as follows:

1. take a shot or double-shot glass and fill half-full of Bailey's Irish Cream
2. fill the rest of the shot or double-shot glass full of Jameson Irish Whiskey (or your other favorite Irish whiskey). The whiskey and Baileys should remain separate. Use a spoon to poor the whiskey over the Bailey's if necessary.
3. Light the whiskey on fire and drop into a half-pint of Guinness stout!
4. Slam the glass down after drinking mixture in one full gulp!
Yelled: Barkeep! Irish Car Bombs for my lads!

Bartender: What'll you have?
Patron: Irish Car Bombs for me and my lads if you please!
by SS January 22, 2004
 
2.
A cocktail made of Guinness Stout, Irish Whiskey, and Bailey's Irish Cream.

The key to the Irish Car Bomb is to drink it very quickly before the Bailey's reacts with the acidity of the stout, causing it to curdle (essentially turning it into cheese). The result makes the cocktail very unpleasant to finish.

Start out with a glass of Guinness, or Guinness mixed with a shot of whiskey. Then paying close attention to time lapsed, drop a shot glass full of Irish Cream, or Whiskey and Irish Cream into the glass. Chug.

The Irish Car Bomb is very filling and is recommended to consume it early during a night of drinking, as opposed to late.
I love turning drinking into a sport, so I ordered an Irish Car Bomb.
by Anonymongo November 09, 2006
 
3.
1. A mixed drink consisting of half a pint of Guinness, with a shot half full of Jameson and half full of Bailey's dropped in. Needs to be chugged ASAP before the entire concoction curdles in your mouth.

2. A drink that will fuck you up so bad your head will feel like it has been in a major terrorist explosion the next morning.
Yagerbombs? Those are for Gotti boys. We'll take a round of Irish Carbombs.
by Deadcatt July 23, 2008
 
4.
fill a glass up with 3/4 guiness. then fill a shot glass with 1/2 irish whisky and half baileys irish cream.. drop the shot glass in the beer and chug!
"wanna do some irish car bombs"
"sure"
chugs and pukes
by lklklk September 22, 2006
 
5.
A drink consisting of a shot glass full of 1 1/2 oz. of Hennesy Irish whiskey and 1/2 oz Bailey's Irish creme. Drop the shot glass into a 1/2 pint of Ginnuss sp? and down it quick.
Man, I had about 5 Irsh Car Bombs last night...I was fucked up.
by Pork King April 30, 2003