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1.
A condition where-by attempting unusual sexual practices, incapacitates the subject through anxiety and/or headaches.

Especially debilitating when attempting the karma sutra or attempting to mount wives currently suffering with PMT.
Jack: Oh! did you manage the anal headstand

maneuver with Kate after?!

Ian: No, she was being totally neu-erotic and wouldn't try. :/
by Dr_Farquarphandye November 16, 2010