Oh my God! Really? I had no idea that "to fork" is such a blasphemy! I used it becouse I wanted to do a pun and I thought that the word "fork" had a similar meaning to "tease"! Plus, on my dictionary I didn't find any inappropriate meaning! I assure you I didn't mean to offend anyone.. the English people or the Queen! Oooops!
I apologize to all, I'll change the title right now!
its used as slang for f.*.c.k
i.e. i don't want to go to forking work
(i am from the UK