Someone who is keen on mouthing cocks. He or she who is self proclaimed or even suspected of enjoying a penis in the mouth or even on the lips with only a threat of oral entry.
Sara: Yeah I think he was ready to give up on me until he found out I was a cockmouther. Hey pal get your fucking calogne selling ass off my fucking property you fucking cockmouther mother fucker!!!!!
by The Blind Inventor March 7, 2008
Get the cockmouther mug.
A crime committed against all that is good and holy by a woman when she kisses a man and has performed oral sex on another man within 24 hours. The man is then infected with Cockmouth, from which he can readily discern the taste of cock or ballsack, and in the most severe scenarios can taste the "taint salt."
"I think that girl at the party gave me cockmouth."

"I'm a horrible soulless bitch and blew this guy in the gas-station bathroom before making out with my boyfriend."

"That chick just blew me, and now she's giving her boyfriend Cockmouth!"
by Butterdick Jones December 25, 2011
Get the Cockmouth mug.
when a female sucks another mans penis then makes out with you.

Usually occurs at extremely good parties
Man, Vanessa sure is a good kisser

Dude, she just sucked Pat's dick! You just got cockmouthed!
by Ac Masta Flex June 21, 2006
Get the cockmouthed mug.
a complete and total douchebag that will not shut up. All you can hear from that douche is complete cocknicity.
Man, that guy is a total cockmouth. He won't shut up about how he boned his fifth girlfriend last night!!
by Raebabe October 30, 2009
Get the Cockmouth mug.
A person who happens to prefer sucking cocks to handjobs and/or can fit quite alot of cock in their mouth
Rachael is a cockmouth
by scarlett .k March 11, 2008
Get the cockmouth mug.
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
Get the cockmouth mug.
The smell/taste in one's mouth that one experiences up to 12 hours after giving a man a bj.
Despite the fact that she blacked out, Sarah-Jane knew she gave head last night because of her retched cockmouth.
by brittani12 November 12, 2007
Get the cockmouth mug.