ни хрена(в значении "совсем не": John can't sing for shit. • I can't hear you for shit. • French bikers are friendly and their cagers are less annoying than British ones, but they still can't park for shit. • Know the face, can't remember the name for shit.4uzhoj)
на хрен не(I got bachelor's degree and last year I got master's degree and I don't need it for shit. With or without it, wouldn't affect the money I make.4uzhoj)