+ rep for thinking to post this here man, classic.
It seems that there is some confusion as to the difference of a waterfall and a gravity.
With a grav, which is when you cut off the bottom of a 2 liter bottle, YOU control how fast you pull up on the bottle and thus how fast the air comes down. You could go to fast and scorch your bud early, or too slow and not milk the whole thing.
With a fall, I like it better because airflow is CONSTANT. there is no room for user error! there is one (or two) holes and as soon as you take your finger off them the water drains out and pulls the smoke down.
And someone earlier was asking what the point if this beauty is......
This is the ultimate DIY smoking tool! It is a must have for any true stoner! Short on bud? A couple falls will get you fucked, and you really dont need much bud. (me and my friends have always just drilled ratchet pieces into the tops of whatever bottles we're using)
And smoking out of glass is sooooooooooooo much better then smoking out of plastic, which I personally fucking hate. Rips smooth as butter.
Just a great thread. I sort of thought everyone had these in there house already. If you dont yet, make one and you wont regret it!
haha just my 2 cents, I know Im way late to this party thanks for reading