Fan Casting Cheating with the Milkman in Sort by Tropes

A woman cheats on her husband with the milkman, mailman, or some other man who visits her home on a regular basis while hubby is at work. The image of the womanizing milkman was very popular in older works and persists even though milk has not been regularly delivered to people's homes in decades. Plus, nowadays both partners are likely to have jobs outside the home, and delivery workers today are more likely than in decades past to be women themselves. Although there were some isolated Truth in Television incidents of such affairs, this trope is less based on them than it is the general fear of someone's spouse cheating on them while they're away at work, especially if it's with someone who comes straight to the door. As few milkmen are still working, it is more common nowadays for the wife to cheat with a postal/package delivery man, repairman, or some other service provider that a housewife would interact with while the husband is away.