The act of riding on Portland's MAX lightrail without purchasing and/or validating a ticket. Honest riders often forced into MAX jacking by out-of-order ticket dispensers and/or validator machines.
The Rockwood validator was out of ink, so I had to MAX jack it all the way to Beaverton.
When tow truck drivers engage in abusive, predatory, tricky practices to snatch vehicles, that would be a "tow jack" or "tow jacking."
Watch out for that guy in the tow truck sitting at the end of the lot. If you leave the restaurant and walk across the street to mail a letter, he will tow jack you out of the parking lot the minute your foot steps outside the building.
When you're going at it from behind and about to cum, you grab her hair and pull her head back and shoot it in her eye. She yells arghhhh! and patches her eye with her hand. The Jack Sparrow.