A shambles. Sounds vulgar, but may not be; it may be a grouse shooting term. Customarily, shooters employ beaters to disturb birds on the ground and drive them into the air towards the guns. Normally one only shoots grouse hens, so if the beaters were by mistake to put up a grouse cock, they would warn the guns not to shoot by shouting "Don't shoot! It's a cock up!"

Can also be a transitive and intransitive verb.
One's whole shoot today was a disaster - one cock up after another. Now where's Camilla, the slapper? One feels like giving her a Dirty Sanchez. - Prince Charles

Another day, another cock-up - Tony Blair on the Iraq situation

The whole Iraq situation has cocked up badly - Tony Blair on the Iraq situation

I really cocked up Iraq, didn't I? - Tony Blair on the Iraq situation
by Tony and Cherie Blair July 21, 2006
Get the cock-up mug.
To make a complete mess of things. Derived from the traditional archery usage where, if the 'cock' feather was uppermost, the arrow would not fly straight.
That was a real cock up.
by Tawera March 29, 2008
Get the cock up mug.
Another word for screw-up or screwup; to err.
Nothing goes right - it's just one cock-up after another!
by mrbadguy23 December 12, 2005
Get the Cock-Up mug.
to mess something up. used primarily in England

also see fuck up

past tense: cocked up
That flaming retard Bush sure cocked up that war!
by Kono January 23, 2004
Get the cock up mug.
An exercise for the penis, very similar to curl ups for the abs
Damn! Billy just did 35 cock ups in a row, he's in great shape down there!
by IZ93 April 14, 2010
Get the Cock ups mug.
(verb-past tense)To have messed up, had an accident, or created an otherwise unwanted incident causing problems for other people.
(in left4dead)
Louise: WHY DID YOU MOLOTOV ME WHEN WE COULD HAVE MELEE'ED THEM ALL AWAY!? FRANCIS YOU COCKED UP THE PLAN AGAIN!!
by Bill the veteran December 10, 2008
Get the Cocked up mug.