A man with 12 kids visits his Dr., asking for advice on how to prevent future pregnancies...

“Have you tried condoms?” Asks the Dr.

“I did, and it resulted in 3 kids!” said the man.

“Have you tried birth control?”

“I did! And it resulted in another 3 kids!”

“Have you tried IUD (intrauterine implants)?”

“I did! And it resulted in 3 kids!”

Confounded, the Dr. says bluntly, “well, have you tried not sleeping with your wife?”

“I did! And it STILL resulted in 3 kids!!”