I don't know why, but lately when I finish shelving I bring my empty cart back along the south side of the shelves. I guess it's just been working out that way. This brings me directly at the person sitting at the Reference desk before I make my turn to the elevator. So as I approach the librarian at the reference desk I say "Is this where I return my empty cart?"
No one, as yet, has found this amusing. Either the people who have been there do not like me or they do not think I am being funny. Sadly, every so often, these are exactly the same to me.