Smashenger
A companion that is both smashed and a passenger in the car. Typically turns up the radio, wants to stop at every fast food restaurant, forces the windows to be locked by someone else and absolutely refuses to cooperate with a sober driver that is doing evryone in the car a favor.
Yo Ricky, we're not turning up the radio, and we're not stopping for food, and I locked the windows because you told that cop to 'suck your dick'. Your being a smashenger and I don't appreciate it.