A cashie is when a man ass fucks a woman so forcefully that her head comes into contact with a hard and unyielding object such as a headboard, brick wall, car door, etc. A cashie is a combination of master power fucking and the perfect amount of ass-slapping humiliation that a slut truly desires to be maximally aroused.
After I poured two bottles of wine into that redhead, I took her out back of the bar, bent her over, and gave her a fucking cashie into the brick wall.
A job where you get cash in hand. Tradesmen commonly accept cash in hand jobs.
I got seven cashies today.