A person who pisses someone off to such an extent that all the person can call them is "fucking fucker".

ass hole dumb shit,retard

A cockblocker who prevents you from getting laid, or, if you are in the middle of sex they somehow ruin it.

Fucked as fuck, to be so fucked up already he isnt able to come and hang with the bro's

Not to be confused with fucking fucker, although it means basically the same thing. The extra 'fuck' is thrown in for good measure. Usually preceded by 'fuck you'.

Someone who fucking fucks.... Fucking is a verb so it just tells you that the "fucker" is doing just that. Fucking. He is often found being a noob. Or when you yell at someone and you have nothing better to say than "YOU FUCKING FUCKER!!!"

"Fuck Fucker" originated in England and has since caught on in the United States. It is a blend of "debbie downerness" and a distinct tendency to mooch.