Just tried this

[skatin_foo15]

haha me and my friends did it with a gallon jug, that shit fucked me up, but then 45 minutes, 2 bowls and a joints later i was sober...kindof ruined my week and maybe the rest of my weed smoking days... anybody have a problem when they got so high they sobered up?

[stick]

First time I tried a waterfall, I got my first bad high, and I was fuckin hiiiiiigh as I sat on the couch waiting it out, but then I had to get up and walk a bit, and as soon as I did, I vomited a bit, and that sobered me up instantly.

[josh g]

There are a BUNCH of threads over here teaching you how to make sobe WF bongs!
Search em up, pretty nifty. *theres a spot near the bottom thats thin, and you can just use a nail and hammer*

[sstrunks]

Just like Josh said. Look at the bottom of a Sobe bottle, & you see an indention.

[RastaPete]

haha first time i got high it was with a waterfall
i had flame regs(i live in chicago) i was high for a good 4 hours

[slightlystoopid27]

use a nail and a hammer and slowly hammer the nail into the glass bottle