Non Con, which is the abbreviation of Non consensual (Sex, etc..)
A/N: Authors Note
IC: In character
Slash- Male romance between two characters who are not originally together
Fem-slash- as applied above, only with women.
Song Fic: Fan fiction heavily based from a song. The song is used in the story, too.
Two-shot: Like a one shot, only broken up into two parts because of it's length.
Mpreg: Male Pregnancy
WIP: Work in progress
When I was a newbie Fan Fic reader/writer, I got my terms from Wikipedia.
Boys who kiss boys are even hotter than hot boys