Taking the face, and possibly upper neck, of a good friend or sworn enemy and Photoshopping their likeness on a pornographic picture, usually one of homosexual or taboo content, in order to cause embarassment and shame.
Bob: Dude! Look at this! It's TOTALLY a picture of Jack sucking some guy's dick while he's jerkin' another guy off!
Henry: What a faggot!
Jack: That's not real. Bob just pornoshopped my face on there. He got the idea while he was looking at gay porn.