Someone who is so obsessed with corn that they masturbate with it, and after orgasming suck the luscious juices that get in between the kernels.......and maybe eat a little bit.
Tommy: "Boy, I think Cindy may be into cornfelching."
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi