Crock Off 

When used alone, crock is often used as a synonym for "lie" or "bullshit". But when paired with "off" the phrase can be used interchangeably with "fuck off". Because the phrase is relatively uncommon, it is a great way to tell your opponent off while also confusing the hell out of them and making them forget what they were talking about in the first place.

Ignorant peasant: "Hey guy, you got fake timbs boy!"
You: "Crock off!"
Ignorant peasant: "Huh?"

Crock Off by Cr0ck 0ff February 13, 2017

cut your cock off 

sounds a lot like kartya kokkov

Because her name sounded like "cut your cock off", she decided to change it to Anita Dick.

cut your cock off by yorrick hunt January 30, 2008

rock your cock off 

To be impressed.

Hey Dave, that steak will rock your cock off.

rock your cock off by Handjack6969 December 26, 2017

knock your cock off 

To be so surprised/astonished/amazed/intense that your cock is knocked off.

That tentacle porn will knock your cock off.

knock your cock off by Who are you? GTFO of here! July 17, 2014

Cock-off 

An event much like a duel, where two men unable to come to terms by conventional methods such as talking or fighting, stand back to back, walk 10 paces, turn and drop their pants. The man with the largest cock wins, and the loser must hang his head in shame and leave.

Obviously talking or even fighting wouldn't have settled the argument so I challenged him to a cock-off. I won.

Cock-off by Slaney October 3, 2006

Cock Off

Coigned by Bubba the Love Sponge: When two males that cannot settle an argument or dispute in any other civilized fashion resort to measuring their genitals to determine a winner. The standard form is to lay your junk on a table about yea high while your opponent does the same from the opposite side. The match is immediately forfeit if you attempt to touch your opponent while he is in this position.

Bubba and Ronny had an dispute that they couldn't settle. Bubba challenged Ronny to a cock off. When they measured their cocks, it was determined tht Bubba's cock was longer....He was then named the winner of the cock off and the argument. ...and there was much rejoicing

Cock Off by lumberjim December 31, 2007

Cock-off 

Two men use the barometer of manhood to win a duel relating to who has the strongest masculinity.
A win can be attained without the need for a showdown (similar to poker)

Two geezers in a pub toilet. A clubber and a long haired Iron Maiden Man. A cock-off ensues.

Clubber: "Feeling insecure there m8?"
Mr. Iron Maiden Man(slightly confused look): "a-NOPE"
Small pause.
Clubber: "you should be"
Mr. Iron Maiden Man(slightly annoyed & definitely agitated): "Yeh - any time you want mate - bring it on"
Clubber finishes and leaves, Iron Maiden Man wins.

Cock-off by Grovesy the first October 19, 2009