i somtimes put my head between my legs or lie down for about 5 mins...then take 3 HUGE tokes of a spliff while still in this position and hold all 3 tokes in, keep holding the lung full and briskly stand up.....when up relax your body but hold the smoke in for as long as you can...you get the biggest head rush ever....it feels like your going to black out, i get tunnel vision and lose balance then when you "come round" its on of the strangest feeling ever. lol....pretty lame but i like the feeling of blacking out then coming round