Moth joke
The moth joke is a 2009 joke told by the Canadian stand-up comedian Norm Macdonald, delivered during an appearance on The Tonight Show with Conan O'Brien. The joke involves a moth who enters a podiatrist's office, tells a Kafkaesque narrative about his family miseries, and, upon being told by the podiatrist that he should see a psychiatrist and asking why he entered his office, responds, "cause the light was on".