Verbatim is a quarterly language magazine about fun language/linguistics topics for non-specialists, edited by Erin McKean. I can’t seem to figure out from the internet whether it’s still being published, but there are quite a lot of back-issues online, both on the official site and on Questia.
Or if you prefer your pop-linguistics in dead-tree form, there’s also a book that compiles some of the best essays from Verbatim.
Excerpt from a sample article: “You Sucker! Participatory Humour" by Jessy Randall (Autumn 2003).
I have long been fascinated with a particular type of humor, a type that, as far as I can tell, has no name. I have settled on calling it participatory humor, since these are jokes in which the listener (or “victim”) participates, whether she means to or not. Like most of us, I first came into contact with participatory humor on my elementary school playground, where such humor flourishes and probably originated. I have been pleased to see that it lives on in sophomoric films of the present day. […]
At a somewhat higher level of sophistication are jokes in which the answer to the question is the punch line—the listener just needs that pointed out.
What were you eating under there?
You were eating underwear?!
[…] Then there are the jokes in which the speaker asks you to respond with the same phrase after everything he says:
What did you have for breakfast?
What did you have for lunch?
What did you have for dinner?
What did you do all night?
Pea soup … argh!