I recently got a little metal pipe for weed. On the bowl, though, is a screw on "Cap", with a hole in the middle. ...What the hell is that? : s
u fill the weed in the bowl then u screw that cap on Then u put the lighter up 2 that little hole and light it and barely suck! Its good for takin around with u so it wont fall out.
ah yes dude. what a clever little cap they add wit the pipe. after u pack ur bowl, screw on the cap and now u can hit the pipe sideways, upside down or whatever. it helps keep the smoke/weed in also.
My theory as i posted it up in another thread asking the same question: 1) To concentrate the flame 2) to protect from wind 3) to keep the cherry burning longer with less air [like a fireplace with a adjustable door for air] 4) to carry around a portable bowl
ahh yes a girl I knew used to have one of those. She just threw the cap away though because it was a pain in the ass, you kept having to take it off all the time cuz the bowl never could pack deep.