What's the difference between a woman and a dishwasher?

The joke “What’s the difference between a woman and a dishwasher? I know how to turn on a dishwasher” relies on a play on words and a double entendre involving the phrase “turn on.” In a literal sense, “turning on” a dishwasher refers to activating the appliance to wash dishes. However, “turning on” someone is a colloquial expression meaning to arouse or excite them sexually. The humor in the joke comes from the speaker implying they understand the straightforward, mechanical process of operating a dishwasher, but are clueless or inept when it comes to romantically or sexually engaging with a woman. The joke plays on common stereotypes about relationships and the perceived complexity or mystery surrounding romantic interactions, particularly from the perspective of a male who might find understanding and responding to his wife’s romantic or sexual cues challenging or confusing.