From Smoking Gun:

An Army veteran who painted “Obama Fuk Off” in large letters on the side of his truck was questioned by Wisconsin cops after police dispatchers received acomplaint that the profane message was inappropriate “for kids in the area

Hamm contends that he did not misspell the word “fuck” on his truck. Instead, “Fuk,” he notes, is actually an acronym for “Fundamentally Useless Kenyan.”