In English-speaking culture, a milkman joke is a joke cycle exploiting fear of adultery and mistaken paternity. This class of jokes has its roots in the early part of the 20th century, prior to the regular availability of milk in supermarkets. At that time, milk in glass bottles was delivered directly to customers' houses by milkmen, generally in the morning. Men were commonly the main financial supporters of their families, and a man's wife tended to remain at home to care for their children and home. As the milkman would visit the home at a time when the husband would be away at work, this created an opportune situation for adultery. Oftentimes, a different profession will replace the milkman in various jokes. For instance, in Spain, 'milkman' jokes are told about butaneros: persons who deliver butane, bottledfuel gas, to households without a pipeline gas hookup. Similar jokes referring to other professions, such as postmen, plumbers, pizza delivery drivers, and swimming pool cleaners, are also known.
Example
Sam pulled up a stool at his favourite bar and announced, "My wife must love me more than any woman has ever loved any man!" "What makes you say that?" the bartender inquired. "Last week," Sam explained, "I had to take a couple of sick days from work. She was so thrilled to have me around that every time the milkman or the postman came by, she'd run down the driveway waving her arms and hollering, 'my husband's home! My husband's home!'"
In arts and entertainment
Monty Python'sFlying Circus had a short Seduced Milkmen sketch, where a lonely housewife lures the milkman into her house and up many stairs, then shoves him in a room with nine other milkmen, many of whom are very old and locks the door.
An entire episode of Father Ted was based upon the joke.
In the South Park episode "Insecurity," the male inhabitants believethe localdelivery man is having affairs with their wives and one of the elder inhabitants of the city reveals that their situation was the same as his during his era with milk men.
The title of the Eugene O'Neill drama 'The Iceman Cometh' plays on this type of joke.
