The librarian knows.
Your sock is hiding in the dryer outside of eyesight. JohnnyGunn tells a funny story about calling the library to find out the location of their missing sock in pablocake's Ask Me post about a phone hotline (instead of Google) for questions. It should come as no surprise to Mefites that in this, as in so many things, librarians are our heroes! (or, as Mournful Bagel Song puts it, "unearthly beings of pure knowledge")
