Military term for an operation in which multiple things have gone wrong. Related to "SNAFU" (Situation Normal, All Fucked Up") and "FUBAR" (Fucked Up Beyond All Repair).
In radio communication or polite conversation (i.e. with a very senior officer with whom you have no prior experience) the term "clusterfuck" will often be replaced by the NATO phonetic acronym "Charlie Foxtrot."
A person who is completely unable to do anything right or to make things work. If given any task he/she will fuck it up causing problems for everybody.
Mike: How will be in charge of the christmas office party this year?
Al: I will take the title of marster of the ceremony?
Mike: Al, the only title you can take is Captain Clusterfuck. You can not organize a trip to the bathroom, let alone a party. Everything given to you is doomed for failure.
Playing any game of conquest or rush on operation metro in a 64 player server without any limits on XM25, M320, C4,Claymores, SMAW, RPG, LAW, or any other explosives in hardcore mode.
I was feeling good about killing 2 enemy players until I rounded the corner to get killed by a C4 camper, then respawned to trip a team mate's claymore and die by friendly fire, Operation Clusterfuck strikes again!
"If you looked up clusterfuck in a dictionary, well you wouldn't find anything because clusterfuck isn't a real word. But if it was, there would probably be a picture of South Sudan next to it."