When two men have man to man, heart to heart conversation. Or a cock talk.
Matt: Hey Dave..we need to have a chat..
Dave: Man chat?
Matt: Cock talk..
When a woman tries to speak while performing fellatio.
"John thought he heard his wife say 'I love you' while giving him head, but it was hard to understand her cock-talk"
When a guy at a urinal starts a conversation with the guy at the urinal next to him.
"I was at the pisser at work today, and my boss started up with the fucking Cock Talk again...going on about the MacGruder account! Eyes straight ahead!"
The act of trying to persuade a female to sleep with you.
"I can't believe you spent all night Cock Talking to that girl, and all you got was a handjob."
When one talks through their cock.
"I like cake," Pete said through his penis.
A women or man who speaks while giving oral
"oggwaahhjalsdjad" Would be like what a sentence would sound like using cock talk.