Polite version of a shitload, fuckload, ass-ton, fuck-ton, shit-ton or metric fucking shit-ton.
Horkloads are typically counts above 1500, whether weight or quantity.
I just found a shi- uh... I mean, horkload of magic cards in the basement. Can we sell them for beer money?
A poor white woman who strips the feathers off owls and sells them to the mafia, heklooo's often carry around corpses of dead children, or whiny 2 year old's that gnaw on owlbones.