The most successful videos have a tiny character arc. By the end of the video, the Big Step Sister either learns to knock, or the Little Step Brother buys a doorstop. Resolution satisfies the viewer.
If we reconstruct the likely full title, it probably reads something like: "Big Step Sister Didn't Close the Door (Caught on Camera)" or "Big Step Sister Didn't Close the Curtains – Embarrassing Moment." Video Title- Big Tits Step Sister Didn-t Close ...