This is one of the most mysterious songs on The Wall. It seems to be about the longing for human interaction. The phrase “Hey You” implies calling out to someone (for example, “Hey you over there”). Following that phrase in every verse is a person in some sort of desperate or pathetic scenario. Most of these scenarios are pretty general but some are specific, for example, “You out beyond the wall breaking bottles in the hall,” which gives the impression of a rebellious teenager, or “You standing in the road always doing what you’re told,” which gives the impression of someone who is very timid and indecisive. Following these scenarios in every verse is a question asking for human interaction, and as the song goes on these questions become more desperate in every verse: “Can you feel me?” “Would you touch me?” Can you help me?“ In scheme of the album as a whole the song is about how although people put up their "Wall” to keep people out, they desperately but hopelessly long for real human interaction.

Hey You by Pink Floyd - Songfacts — Songfacts

Hey You by Pink Floyd song meaning, lyric interpretation, video and chart position