1 definition by AdamQ

Talking badly with a cocky attitude; to talk back.

Traces back to late 2004 when AdamQ and Christi were making rules for Christi's Canesty (pronounced kane`stir). Derived from "cocky attitude" and "bad mouth".
Example 1:
-AdamQ: Ummm... FAIL!
-Christi: Are you cockmouthing me? Refer to rule number 1, please.

Example 2:
-"OMG, that bitch was cockmouthing me behind my back!"
by AdamQ November 26, 2004
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