This reminds me of the shelving cart at the library when I was in undergrad. It had a sign taped to it that said "I AM THE SHELVING CART" and I used to puzzle for entire afternoons over whether that sign had truth value.

Related humorous anecdote: I attended a conference and everyone put on name tags. I idly wondered whether name tags had truth value; someone replied with the rather snappy, "Yes, but only if they start with "Hello, My Name Is"."

Edit: I seem to be getting downvoted a lot today. Have I earned someone's animosity? Is there something wrong with a couple of brief, mildly entertaining anecdotes as a response to a post that consists entirely of a related cartoon? Help me out here.