http://www.erowid.org/chemicals/amt/
http://leda.lycaeum.org/Chemicals/AMT.168.shtml
http://www.pooterland.com/index2/looking_glass/merry_pranksters/body_merry_pranksters
... in the groove in a circular fashion. The groove inside the device, is a little wider than the axis, and the gyroscope's evasive action towards the externally applied ...