A researcher is doing a study on the sexual habits of trailer park denizens in Alabama. He finds one family with 12 kids, and decides to ask the mother some questions.

"Ma'am," he asks, "Don't take this the wrong way, but do you know anything about contraceptives?"

"What the hell're yu a talkin' bout?" is her dumbfounded reply.

"Okay, well, for instance...what do you and your husband use when you're having sex? Do you use condoms? A diaphragm? IUD?"

"Nah," she replies. "We get along fine just a usin' my ol'man's dick!"