You know about self-referential statements. The classic examples are the Greek logical paradoxes. The Epimenides Paradox, in one variant, asserts: "This sentence is false." For millennia, philosophers have struggled to determine what such bafflers mean, if indeed they have any meaning at all.
""Is Anal Retentive Hyphenated?": Self-Referential Humor,"
Word Ways: Vol. 37
, Article 6.
Available at: http://digitalcommons.butler.edu/wordways/vol37/iss4/6