In American movies why didn't thy lock the door while having sex or masturbating?

i used to watch lot of high school comedies in that they didn't lock the door while hookup or masturbating and they get caught by friend or parents why is that is that for movie or its also in their real lifeIn American movies why didn't thy lock the door while having sex or masturbating?They're playing it for humor, and unfortunately, it also happens in real life.



But it doesn't just happen in American movies. Haven't you seen Atonement? If they had just locked the library door, most of the other stuff wouldn't have happened.In American movies why didn't thy lock the door while having sex or masturbating?Just in the movies, unless by accident. It's to CAUSE a scene/story.In American movies why didn't thy lock the door while having sex or masturbating?tats a part of funIn American movies why didn't thy lock the door while having sex or masturbating?
It's real life. No-one really locks the door to do things like that.

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