Coming up this week on A Prairie Home Companion, a mix and match of Joke Shows past with at least one parrot joke, lightbulb jokes, some new man-walks-into a bar jokes, Unitarian jokes, lawyer jokes, shellfish jokes (yes, really!), and the ultra-rare bi-lingual joke. Plus, there will be one joke segment that has never aired before, with all new jokes mined from the murky depths of the Internet. Pat Donohue sings "Ain't No Joke," Andy Stein brings a fresh crop of knock-knock jokes, Guy Noir searches for a punchline, Dusty and Lefty find solace in a joke book out on the godforsaken trail, and a cautionary tale from Lake Wobegon Elementary School about serving greasy sausage pizza for lunch.