For example, "Zardoz" coming from an old statue that had "Wizard of Oz" on it and some of the letters had worn off, or a statue of George Washington being referred to as "Ashing" in "By the Waters of Babylon."
Typically, a character will approach the ancient ruins of something and see part of the name, or primitive peoples will be worshipping some pop culture ephemera and calling it by a partial name after a generic nuclear holocaust.
Those are the only examples I can think of off the top of my head. Apologies for using the t-word, but it seems appropriate here. Predictably, tvtropes itself is useless, and Zardoz's page does not have this listed on there.
It would be useful to have as a piece of shorthand since it's fairly common. I will usually say "I got Zardozed" while watching tv with friends, but when discussing things informally with people who don't know me well, having a general one (if such a term exists) would be useful.