This article is from the The Complete Guide To Hack Stand-Up Comedy, by Steven Rosenthal and Steve Silberberg (email@example.com) with numerous contributions by others.
And let me guess... hmmmm... were the people there stupid and inbred
perhaps? The stupid incest Southerner joke was put to rest when Dennis
Miller said, "There are people in Alabama who are their own fathers."
That's it, it doesn't get any bigger or better than that.