Those kind of bongs are made so that you can have a slide or a carb system. If you want to use it as a slide you put the rubber stopper back into the carb, and put in a slide bowl. If you want to use the carb, you can keep the slide in, or you can put in a normal bowl and do it like that.
imitator Reviewed by imitator on . My First Piece!!! (Pics soon) So I went today on a whim, and bought my first piece, a lame piece, but a first none the less. I'm pretty broke, but been wanting a bong for ages - bought myself a $20 transperant purple bong. Not too tall, kinda small, but pretty good for my "nosy" parents. But now for two questions (never used a bong); there's a black rubbery knob on the back, what is that ? And when I'm using it, I've seen people take out the stem/bowl when the inhale, for my acrylic is it the same? Thanks a lot Rating: 5