Can be used as a synonym for screwed, taken advantage of. Can also be used to describe a sexual encounter.
I got horse jacked at the car dealership.

Lisa's hot, I would horse jack that ass every morning.
by elusive007 November 19, 2008
Get the horse jack mug.
Horse jack means delivering manual lovin' to a horse's dong.

Messy but fun.
As Morton began to horse jack Dobbin, there was a noticeable bulge in his pants.

Dobbin's eyes glazed over as the bucket began to fill.
by scodder May 3, 2010
Get the horse jack mug.