Marine slang -- A clusterfuck was any group of Marines big enough to draw enemy fire, or several Marines close enough together to be wounded by the same incoming round. More generically, a clusterfuck was something that was all screwed up. Whenever three or more CAP Marines gathered in the open, talking or working on something, somebody was sure to call out "clusterfuck!" and one or more guys would walk away.
4 Marines were killed in a giant clusterfuck.
by RobOfDayton September 29, 2005
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Large quantity of confused people in a disorganized manner.
Sorry I'm late, it was a real clusterfuck on main street.
by Anonymous November 24, 2002
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An orgy, sex en masse
It was a room full of people fucking, one giant clusterfuck
by Anonymous December 22, 2002
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The only word / colloquialism left in the scope in the English language which can accurately describe the BP oil spill situation in the Gulf of Mexico.
A: Have you heard the latest on the oil spill? B: Yeah, what a clusterfuck that's turning out to be.
by Daggoth T. Rothri June 3, 2010
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Originally a military term, but increasingly used to describe a particularly fucked up, chaotic or disorganized workplace or office situation.
Example 1:

Mike: "Hey who ran all these network cables under my cubicle? Where am I supposed to put my feet?"

Ryan: "Dude, we're putting in the new computers, we need relocate you to a desk in the basement."

Mike: "Jesus, what a clusterfuck this place is!"

Example 2:

Denise: "Be glad you missed the sales meeting today, there weren't enough chairs in the conference room and half of us had to stand, then that idiot Laura knocked over her venti Starbucks coffee all over the table. It even got the phone wet and everyone on the dial-in line got disconnected. God, what a clusterfuck!"

Brianna: "Like oh my god, total!"
by SoCaliCali January 11, 2009
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Yet another crisis arises because of the actions of that clusterfuck over at the White House.
by Doc!!! August 15, 2006
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