\"The so-called \"California Knockout,\" a person holds his breath for 10 seconds to get light-headed, after which a pal squeezes his neck to put him out (unconscious).\"

It\'s some kind of wacky \"trip\" or \"high\" inducing maneuver. Commonly practiced by stupid teenagers. It kills brain cells.
Info from article \"Our Civilization in Decline\".
by dr April 27, 2005
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