Here's something I never expected to hear as a librarian:
Patron: Can you show me where your microfilm reader is?
Me: Sure, follow me...
[show him where it is, and give him a quick overview of how to use it]
Me: Do you need help finding a microfilm reel?
Patron: No, thanks, I brought my own.
He brought his own?
But indeed he did. I never found out what it was he was looking at, but he had a bag full of reels, and spent a couple hours going over them. Huh.