in an effort to prove to other members of this board that i am not insane, i post this thread.
have you ever ‘squeezed’ the air in your mouth so much that you can see it when you release it?
if not, try it. suck some air into your mouth, and shut it.
squeeze your cheeks in and just try to ‘compress’ the air inside.
relax your mouth, and let it out gently.
did you see it?
bah.
ummm… no.
maybe i should do it when i’m out in the snow.
it has nothing to do with temperature. or at least i don’t think it does.
but you can do it anywhere, as i am doing it right now in a 21 degrees celsius room.
it is quite faint, but it is visible.
bah.
come on, try harder.
I actually did it!
I was sitting here thinking, "yeah, this must be one of those ‘stick your finger in your nose and lick your wrist things’."But I actually did it.
Alright, K.T., now tell me WHY it does that?
i have no idea. i would guess that it’s because it’s compressed somehow.
or something.
Kilgore and three bunny, are y’all smokers by any chance? I’ve seen people expel excess smoke from their lungs soon after having a cigarette by doing this.
no sir, smoke i do not.
bah.
do you really think i qould be posting this if i thought it might be smoke, or due to cold temperatures?
geeeez.
stop trying to find reasons, and just try it. if you don’t do it, then you’re not doing it right.
and no, i don’t think any smoker can release smoke from their lungs by doing this, if you actually read what i wrote.
why would compressing air in your mouth produce smoke?
Clearly, you are delusional.
I think what is happening is that when you release the built up pressure the jolt joggs your eyeballs and makes everything shake slightly and your confusing that with looking through heat wave shimmy, probably looks similar.
Take this explanation and run… before the men in white coats come after you. 
clearly.
i refuse to give up.
I don’t see it either. I think you must be nuts. But, if you want to disprove B_Line12’s alternate theory, just show the phenomenon to somebody else. If other people can see your breath, then I’ll back you.
I first saw this when I was 14. The guy I saw do this was a smoker, and I always thought it was smoke in the lungs. I can see right it right now. Since I used to smoke, I thought that what it was. It seems though that non-smokers on the board can do this to. So, my WAG is it’s just compressed air, like when you open a bottle of Coke. For those who are trying this, but can’t see it- try this: (this is how I can do it) hold your fist across your closed mouth, so as to not let your lips part. Now try to exhale through your closed mouth, pushing with your lungs, as hard as you can, for about 6-10 sec. Then, slowly let it out, while watching. It really works.
©
Uh, Kilgore, do you have some sort of point here, or should I lock/move this thead?
hmmm, maybe you should move it over to MPSIMS.
although i am curious as to what it is, so i suppose that’s a general question.
but it’s probably just the compressing of the air that makes it visible.
so mpsims it is, then.
Compressed air isn’t visible until it’s compressed enough to liquify, and there’s no way you’re going to be able to pull that off in your mouth. What might be happening, is that you’re forcing water out of solution, and it’s forming a fog, which you could see. I’m not sure if compressing moist air could do this, but at least it’s a better explanation.
And just for the record, Kilgore, you’re posting this to prove that you’re not insane?