Originally this phrase was For Fuck Sakes, but has since been reduced to a simple Fer Fuck.
This phrase will often be heard when a person is annoyed, distressed or in pain.
Tom : Jeff, Ive eaten all the nachos.
Jeff: Fer Fuck, Tom, i was really hungry.
After waiting at the buss stop for 40 minutes, Chloe realizes the busses are no longer running.
Chloe: Oh FER FUCK!
Reginald drops a tin of soup onto his toe.
Reginald: Fer Fuck! That really hurts!
When Nelson drops his cellphone, he is heard to exclaim
"Fer Fuck" as he reaches down to pick it up.