What is Non-con?
1.
Short for non-consensual. Online authors use this term to describe a story that contains non-consensual sex,
Warning: This fic is non-con, so if forced sex ain't your thing, please leave now.
2.
usually pertaining to fanfiction.
"non-con" is short for "non-consensual" sex, making this a nice way to say "rape".
warning: slash, non-con, and other assorted goodies.
See
3.
Non-Con is short for "Non-Consenting", usually describing something sexual in a story. Synonymous with rape.
Warning: This story contains Non-Con, first time, and slash.