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1.
def. A humorous muffled dialect of a given language; rendered almost unintelligible by the fact that the one speaking (usually female) has a cock in their mouth.

Cockspeak should not be confused with "Dentistic," which is a similar sounding dialect, but is instead caused by the presence of dental instruments, novacaine injections, and a saliva vacuum.
Cockspeak in Action:

Man: "Uuhh.. god.. yeah.."

Woman: "Reeoo liyck nat?"

Man: "Damn.. that's so good..."

Woman: "Wyah, rye noose ty nung an nick ith tall naroun..."
by nutman March 09, 2006