When I say phrases, I mean popular cliches or famous lines like (or not even so very famous lines) Examples: "There is no Spoon" - the matrix. "Get thee to a nunnery!" - shakespeare "Hastalavista, Baby!" - Arnold Schwarzenegger What if you use it, but change it around? Trick'O'Treating is like that present from Aunt Fey. You'll always know what you'll get. (I know, sounds lame but only thing I could think of right now) Or what if you use it as paraody? Is this consider plagerism? Or is it something like lyrics where you would have to ask permission from the artist first before you can use it?