1.) Sexual preference for a blind or blindfolded sex partner.
2.) Sexual preference for having-sex in total darkness; may be due to religious guilt, low self-esteem, or feelings of inadequacy.
(Most people are uncomfortable about having-sex under bright lights ; also, tactile stimulations reach greater sensitivity in semi or total darkness.)
A progressive, terminal disease where one's motor neurons degrade. This causes muscle weakness and atrophy and eventually death. Also known as Lou Gehrig's Disease.