absent-minded professor?

Today I put in a recall request for a book at the university library. Tonight I got an email from the library saying that my request was denied because the book is already checked out to me.

I have no memory of checking out this book, but I sure hope I can find it on my shelves somewhere.

I've wondered before what would happen if I recalled a book from myself, and assumed it would be some Kafkaesque situation of having to return it to check it out again. Thankfully the library computer saved me from that.

But it still feels sort of sloppy and embarrassing. Proof again that I don't have a very good memory.