See also: Wallbanging
How this is achieved you might ask?
well, first you would stand straight up against a wall. Than you take 13-15 large breaths and push all the blood preasure into your head. Hold your breath in and have a friend put all their preasure on your chest. You pass out for 20 seconds to a minute, and enjoy!
2. wall bangers are great but I think I'm getting brain damage man...