“Insanity is hereditary. You can catch it from your kids.”
“Insanity is hereditary. You can get it from your children.”
“Death is hereditary. Make sure you enjoy each day before it catches you.”
“Insanity is catching.”
“First, I'm not getting married, so you can forget the wife. Second, if I was insane enough to get married, I wouldn't have kids. Third, if I was insane enough to get married and have kids, it would be a cold day in hell I'd let you babysit.”
“Wrinkles are hereditary. Parents get them from their children.”