A little old lady from Iowa had worked in and around family dairy farms since she was old enough to walk. There were hours of hard work and little compensation. When canned Carnation Milk became available in grocery stores (1940s or 50's), she read an advertisement offering $5,000 for the best slogan.
The rhyme began with "Carnation Milk is best of all....."
She said to herself, "I know all about milk and dairy farms... I can do this." So she sent in her entry. About a week later, a black limo drove up in front of her house. A man got out and came to her door, saying, "Carnation LOVED your entry so much we are here to award you $1000, even though we will not be able to use it..."
Here is her entry:
"Carnation milk is best of all,
No tits to pull, no shit to haul,
No buckets to wash, no hay to pitch,
Just poke a hole in the son-of-a-bitch."