Spotted in Cosmology Class

What a professor writes on the board when he realizes his joke somehow didn't work-

"I will not quit my day job." Good to know, because how would I possibly learn cosmology then? :-)

(For those who do not know, cosmology class is often a time of much merriment and laughter. Perhaps because it's right after lunch, and because after talking a lot about the absurdity known as the universe there's little left to do.)