Cheap, extremely intoxicating (thus fun inducing) alcoholic beverage. 1 pint guinness, half a shot of jameson and the other half of irish cream. You drink it by dropping the shot glass inside the pint, and IMMEDIATLY chugging the contents at once, if not the guinness will foam up and curdle, and you'll look like a fool. its also very cheap. too cheap. 3 will have you good. good for groups, get 3 of your boys together and at the count of 3 drop the shot glass in and drink, whoever is last to slam the empty glass, gets to buy the next round, or do something stupid.

Having sex while driving. Usually involving the man driving and the woman riding him.

Very popular with international terrorist groups including the IRA. A car wired with explosives that are detonated by remote control killing people and destroying neighbouring property. Please do not try this at home. You may notice that when the bomb has gone off with a big bang you may be suffering from deafness. The other thing you will most certainly notice is that both your neighbours and their houses have moved away from the locality. By the way

A fart in a car with closed windows. Especially deadly in the winter with the heat on.

kar' bom <middle english> favorite weapon of goatfuckers the world over.