1. slang A car repair or service job performed by a mechanic in which the car in question is left parked by a wall without any work actually being performed on it. (The customer is still charged for the service regardless.) This damn thing is running just as poorly as when I brought it in to be fixed. Those grifters must have given it a wall job. Never take your car to some back-alley mechanic no one's heard of, or you could end up shelling out hundreds of dollars for nothing but a wall job.
2. vulgar slang Sexual intercourse performed while one participant stands against a wall. The brothel charges $20 for a wall job, or $50 for a session in a private room.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
n. a car—in the shop for repairs—which is parked against the wall with no repairs done. (The customer is charged anyway.) Places like those we surveyed may charge hundreds of dollars for what they call “wall jobs.”
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.