look up any word, like fluffer:
 
1.
To Mess Something Up Or To Do It Wrong
Shaun Of The Dead
"Ahhhh cock it!"
by Skapunkmonk September 19, 2004
 
2.
cock it really means fuck it but if u don't want to use fuck it use cock it.
Shaun of the dead
Ed(while playing a pinball game) "ah cock it"
by Meredith March 15, 2005
 
3.
A term used to show displeasure, like damn it but with a little more emotion. Sometimes following the loss in game of chance. Also known to be used after a denial of sexual advances.
Oh, cock it!!

by Dan Hudds September 16, 2008
 
4.
to ask someone to shut the fuck up!
when dennis went on about how joe screwed up, joe finally asked him to cock it and get the fuck out.
by zoinkatoink May 28, 2008