Frack. Friggin'. Frell. Fesking. Hades. Son of a Whore. Son of a female dog. Poo. Doo-doo. Pee. Urine. Feces. Son of a motherless goat. Farting in your general direction. Holy cow. Oh fudge. Crap. &*^%. @!#+. $^&=.
Why use the actual words when one can be
so much more creative?