ha haa...gasmask bongs are awesome...my buddy made one out of his fresh-air tank for his work (he cleans storage tanks, sometimes with horrible poisonous things in them, so they get big hazmat suits). it actually strapped to your head, and if you smoked too much, it got in your eyes. then you couldn't see, and you can only breathe in smoke, and you choke, and pass out...and if you got friends around they MIGHT let you out. or they might repack the bowl, and light it for you while you sleep.

my friends are sometimes dicks though.