Someone whos mouth gives away the fact they love cake just by looking at it. Never trust someone with cake mouth they will stab you in the back for a slice of Victora Sponge .
Someone who, while on AIM, constantly copies parts of their IMs with certain people and pastes them to others. Like in real life, the big mouth will rat people out when they talk about someone else, only this time it's online rather than through spoken words.
My brother is the biggest AIM big mouth in the world. Every time I talk about someone, he has to copy and paste that excerpt of our conversation and send it to them. One day, he will pay for this.
1) Someone who is constantly talking about vaginas.
2)Someone(usually a woman) who's mouth is used as a vagina, almost like blow job, but not exactly, a mouth fuck involves the male partner to stand up while the female gets on her knees and the male thrusts his cock into her mouth until he finishes, then she swallows.
"Dude, shut up, your a cock blocking vagina mouth."
"wow, my girlfriend is such a vagina mouth, as soon as i get home, shes already on her knees!"
A surprisingly non-derogatory way to greet someone in the state of Indiana. Perfectly acceptable to say to your wife or co-worker. Can also be used to express dissatisfaction over being asked to perform a useless task. Can also be shortened to simply "your mouth" if you are saying it to someone in front of children or at church.