an individual, usually a female, who feels the need to use the photo editing program Picnik to put effects and/or stupid clip art on their pictures that usually makes them look trashy rather than enhance the photo. Often the picnik whore will use a picture of them and a friend to show how popular they are. Peace signs and sticking out your lips like a retarded kid are compulsory. Often when text is put on the pictures, it's one of a few things:
-quote from a stupid song
-"THATS HOW WE ROLL <3333"
-"were such freakssss <333"
-any other thing an adolescent white girl would type.
"Carissa just put a whole bunch of Taylor Swift lyrics to her profile picture...she is SUCH a Picnik whore..."