yeah, basically you just hold in the smoke for as long as possible, usually like 30 seconds. then nothing will come out, but its bad for your brain, you cut off oxygen.
I knida ghost my hits, hold em in for like 10 seconds, smokes comes out but not nearly as much as what i just hit, a one hitter, hold it in an im gooood
You basically just hold the smoke in long enough to let it all stick to the inside of your lungs. It's a good way to fuck up your lungs and deprive your brain of oxygen.
If you're doing it for smell reasons, just make a spliff?.....sploof?.....it's one of the two.