This is attributed to Bennett Cerf.

While on vacation, I was driving through the Arizona countryside when I saw a middle-aged smiling squaw at a stand by the roadside. She was surrounded by sixteen happy laughing children ranging in ages from a toddler to a teen-ager.

I stopped and asked, “Are those all your children?”

“Oh, yes,” replied the Indian women while simultaneously trying to sell me blankets and other relics on her stand.

“With a huge family like that, don’t you have lots of fights and arguments?”

“Oh, no,” she declared with a chuckle,” We’re just one great big Hopi family.”