Complex sentence: The opposite is clothed male, naked female (CMNF); additionally there is CMNM (clothed male, naked male) and CFNF (clothed female, naked female), pertaining to gay men and lesbians respectively.
Split into simpler sentences: The opposite is clothed male, naked female (CMNF). There is CMNM (clothed male, naked male) and CFNF (clothed female, naked female), pertaining to gay men and lesbians respectively.