An abbreviation for "Not Safe For Parents. " Used to describe music, movies or any other media that is abundant in sexuality, violence or cursing. Used by kids to protect eachother from falling into awkward situations with their parents such as having to sit through a graphic sex scene in a film that they're seeing together.
Tony: Did you see Superbad?
Tony: How was it?
Boby: It was really funny but NSFP