Derived of the two words cock and monger.
1. a person who is involved with penises in a petty or contemptible way.
2. a dealer in or trader of a commodity (penises in this case). This definition is mostly used in Britain.
3. someone who is incredibly fascinated in cocks.
George Bush is a cockmonger.
A male who constantly displays his complete and utter penis like personality and world-view in nearly every situation in which he finds himself. Specifically this attitude is exemplified by a perpetual attitude of anger and disgust with the world and how it does not simply go the way said cockmonger wishes. This attitude is usually followed up by metaphorical threats of penile rape.
Guy: So did you get that girl’s number?
Cockmonger: No, that bitch can suck my cock. This whole fucking planet can just go choke on my huge veiny cock!
Someone who can't get enough of the cock.
My girlfriend is such a cockmonger.