Medically equipped vehicle designed to deliver medical services in da hood style, usually after getting a cappopped in your ass, or particularly after getting an epic beat down on by epic beard man on a public transit vehicle.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failure shower.