The phrase "why you were sleeping" is not a standard question in English, so the meaning depends heavily on context. It could be part of a longer sentence, a song or movie reference, or a personal question between people.
Possible language meaning
In normal conversation, someone might say “Why were you sleeping?” to ask for a reason you fell asleep at a certain time or during a specific event. Adding “you” in the middle (“why you were sleeping”) usually means the phrase is being used inside a larger sentence, like “I called you while you were sleeping.”
Possible pop‑culture reference
A very similar phrase appears in popular media titles such as “While You Were Sleeping,” which is the name of a well-known 1995 romantic comedy film and a 2017 Korean TV drama. In that context, it refers to important events happening to or around someone during the time they are asleep or unconscious.
If you share the full sentence or where you saw/heard “why you were sleeping,” a more precise explanation can be given.
