if youve never tried that. do the same thing but with a bowl on top. you light the bowl and let the water run out at it fills the bottle up with smoke. its fun to do and give pretty big hits without wasting any weed.
and o yeah there is way scaryer anti smoking propaganda then that out there
i've always called them sobes, but gravitybongs are something difrent. arn't gravity bongs when you cut of the end of a bottle and skick it in a bucket of water. then spark the bowl and slowly lift up. idk thats always what i callled a gravity bong
dude are you kidding....like when you roll you put the weed in then like a ripped thin peice of a buisness card in the front the side you inhale from??