take a 1L pop bottle (2L if you got BIG LUNGS)
take a Recreational Ball Pump (one of thoes pumps u pump basketballs and socccerballs up with)
take a pin
take duct tape/packing tape
take the lid off the pop bottle, discard of it, you wont be needing it
poke a hole in the bottle near the bottom with the pin, and put the ball pump needle end into the hole, duct tape it in, etc. etc. pull the slider all the way back on the pump.
then, take a hit from your pipe/bong etc. etc. and blow the smoke into the bottle, fill the bottle with smoke as much as you feel is needed, then take teh bottle in your mouth and pump that ball pump, it should shoot all the smoke from the bottle straight into your lungs. enjoy a couple hits and then the after bowls of wheaties.
later days
NOTE: this also works if you poke a bigger hole in the bottle instead of the small one, then use a straw (slurpee straws from 7-11 work great), and put tinfoil around the top with a bowl dipping into the stem of the bottle, poke afew holes in the tinfoil, pack your weed and hit through the straw, like a pepsi bong, then when the bottle is full, take the tinfoil off of the top (wait till alll the weed is killed first so that you dont waste good weed
), and put the pump (without the needle) into the straw (it should fit perfectly) and pump just like you wouldve with the needle part on.