A more thorough explanation:

Definition: Voyeurism is the act of getting pleasure by secretly watching other people's genitals or sexual activities.

For example, if someone secretly watches their neighbor undress through a window, they are engaging in voyeurism. Another example is if someone watches a couple have sex without their knowledge or consent.

These examples illustrate the definition of voyeurism because they involve the act of secretly observing sexual activities of others for personal gratification.