Someone Stolen My Prior

Graduate student lends his advisor a book on tensed logic by Arthur N. Prior. Advisor reads it, then tells his student that he dropped it off in the student's mail box. Moments later the student returns, and breathlessly exclaims: "Professor, professor. Someone's stolen my Prior."

To which the professor sagely replies: "You're lucky around this department they haven't stolen your posterior."

Sent by: Joke Labs posted on 13 October 2007