Please Help Fast

[s2headhunter]

Ok im sorry but im an expericend smoker just not in the bong catagory could you please help me..what is the purpose of a carb because me and my friend made one with like the image ill post and we didnt use a carb and got completely retarded from it....and from not even a gram...i love those bubbles lol anyway please help fast...
http://img237.exs.cx/my.php?loc=img237&image=untitled24uv.png

[Ride.Me.Toked]

clear out all inside smoke by rushing air through it

[slipknotpsycho]

yea it's like a shotgun basicly.....i don't know the physics to it but it gets you more wasted...

[ermitonto]

The carb works like this: it is a hole placed in the side of a bong that you are supposed to cover up with your finger as you are filling the chamber with smoke. Then you release your finger from it, which lets a lot of air directly into the chamber, causing all the smoke to rush into your lungs at once. This is easier than having to draw air into the chamber through the bowl when you're done with your hit, or leaving a chamberful of smoke to get stale.