rough trade

Looked to me like one of these here sissies lookin' for rough trade, see, thought I'd roll him for some jack, what the hell, what can you do if you're sick an' can't work?

Marcus Miller, The Mother Truckers (San Diego: Phenix Publishers, 1968)

Truck drivers Joe, Jimmy, and Allyson cruise the nation's highways in a never-ending quest for rough trade. That's how they get their kicks and break free from the boredom of the road. When they cross paths with Gino and his biker gang, however, the truckers get more than they've bargained for. These hardcore homos are into heavy-duty sadomasochsim, and they think they've found three new slaves!