Last winter I worked at a seasonal job working with groups of volunteers from all around the country. I had a group of teenagers come to my work area and they were all wearing "GMC" shirts. I asked what that meant and was told it stood for Greer Middle College, which was their high school. And immediately I was like, "PLEASE tell me your track team is called Run-GMC". They all stood at me blankly...some of them said "I don't get it."
Got any good instant-geezer moments?