The Hesslar Technique
Also known as The Executioner, The Hesslar Technique is used when there is a low amount of marijuana left for a pot smoking hobbyist. The pothead uses a large or small plastic bag and enhales the small amount of marijuana from either a pipe or roach then swiftly puts the bag over his/her head and removes most of the oxygen. when he/she exhales the smoke it remains in the bag allowing the smoker to enhale the smoke once more. the smoker can repeat this step as many times as they can before they cannot breath, this is when the bag should be removed.
Man, im almost out of weed. I should use The Hesslar Technique if I want to get high.