Verb: To pick someone to be in your profile picture with you on a social networking site.
Etymology: Profile + Picture + Pick ==> prof + pic + k
Girl: We looked sooo hot that night, I totes profpicked you!
Boy: I love you too, honey.
Guy 1: HAHA! You were all PTFO on the couch, so we drew balls on your face.
Guy 2: Jackass.