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.
by buck neckid ALM December 6, 2010
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