Similar theme to SkooterNik, there was a guy we used to see at record fairs in London, who everything we mentioned he had a copy of no matter how rare. It was always either at home, or he'd had a copy and sold it. Sensing he was a major "bullsitter" we started making up names of records, and yes he had 'em! Best one I remember was Ann Sexton on Selma, or was it Fluorescent Smogg on Southbound? - both very rare 45's indeed. So rare they doesn't exist, but when we mentioned 'em old Mikey he reckoned he had had 'em.