A phrase commonly used in streetball after making a shot that someone(usually a friend) said you wouldn't make, especially if they also tried to contest the shot.
by saying the term you are basically implying that they should just shut the hell up
opponent:"yo,you no your not gonna make this shot"
*you shoot, and friend tries to contest it*
*ball goes in*
you: "OHHHH IN YOUR MOUTH!!!"
The act of verbally sharing or expressing dreams, ideals, or improbable plans with others as if they had some validity to them. An extension of the proverb "counting chickens before they have hatched", this phrase is the equivalent to not only counting the chickens, but generously distributing them out to friends, family, and acquaintances.
A: My band is getting a really good response at facebook and we're getting more and more people following us at twitter. It's just matter of time before we're picked up by a label so we can release our CD and go on tour.
B: Stop dreaming with your mouth open. It's just sad...
A: Ooh, I'm going to be hooking up with someone tonight at the party.
B: Dude, didn't your mother ever tell you not to dream with your mouth open?
A: So she told me that she was talking to a massive client and that we should be getting some decent work soon.
B: Yeah, and she tends to dream with her mouth open. I wouldn't hold your breath.
Man: We should go fishin agian
Friend: Hell yeah
Woman: You better not, I wont be at this house when you get back
Man: (Punch woman) Shut your whore mouth when men are talking
The actual name of the disease for fat / overweight peopleliving in denial and believing that their weight gain is from an over-active pituitary or thyroid gland.