a lung that had a bag like 3 feet long, made of fabric linged with plastic on the inside, and a bunch of weird parts and shit on it, like mechanical pieces so you didnt have to unscrew the bowl, you just sucked out of an extra tube on the side come out of weird parts and shit.....i dont exactly know how it worked, but it also filled the bag up automatically, there was a tiny but really powerful fan right underneath the bowl that sucked in all the weed when you lit it, it had a little switch on the side....most insane thing ever, confused the fuck outta me, worked so good though, theres no way anyone could take a whole hoot from it, like an entire bag full, the thing hangs down to the ground when ii held it at my stomach