The "Irish" in the name refers to the drink's Irish ingredients; typically Guiness stout, Baileys Irish Cream, and Jameson Irish Whiskey. The "Car Bomb" refers to the fact that the drink is a "bomb shot" and also to the many car bombings that took place during the Troubles in Ireland. For this reason, the name is sometimes deemed offensive and some bartenders refuse to serve it. The drink is popular in the United States, but virtually unknown in Ireland, and ordering it there is likely to cause confusion or offense