When your at a social gathering that frowns on excessive drinking, and you stash hard liquor in your car to obtain the level of drunk you want without the patrons of the gathering watching you drink in excess.
It's a natural phenomena involving an unplanned erection and a bumpy road. Usually occurs from the back seat of a moving vehicle with little or no suspension. Has actually been referenced by Creedence Clearwater Revival as a 'Travellin Bone' in one of their songs.
Shoes which look great in the shops but walking around in can be painful. Therefore they are good only for going from a car (ie Taxi) directly to the bar, hence "car to bar" Having to walk around from the subway or so is murder.
To not care about something that is said by another person, or is in the process of being said.
It is usually followed by the phrase "Plissee", a modified version of the word please. In saying "BAR CAR PLISSEE!!" - you are telling the person to please for the love of god shut up
This phrase is best used to shut someone up after you specifically make them start talking.