Harry withdrew his guitar, Fuckslayer, from a dimension where all screamed for naught.
Wrought from the silver heart of heaven's false promise, laced with vessels that pulsed with angel's menstrual blood, hewn from the horns of Satan's generals, it laughed as it was set loose, a laugh that only Harry could hear, but no one could share.
An explicit generalised name for something (be it person, place, object or otherwise) you can't remember the actual name of at the moment in time, during a conversation.
(Object)
Dave, pass me the uh... uhm... Fuckslice.
(Place)
Yeah, we took a longtrip to... Fuckslice? - off of the main road...
(Person)
Oh I remember him, his name was... John... Fuckslice.