March 2, 2007 11:20 AM Subscribe
It begins in the paraventricular nucleus. It has been observed in the womb. Muslims believe it's an indication of Satanic possession. Too much of it might be a bad thing. Pandiculation sometimes occurs. In terminal rabies cases and in five percent of Clomipramine users it leads to spontaneous orgasm. Previous wisdom held it was caused by a buildup of carbon dioxide in the blood and mirror neurons make it contagious. And yet still nobody knows precisely why it happens.
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