The phrase "Why You Only Call Me When You're High?" is the title of a popular song by the Arctic Monkeys. It explores the feelings of frustration and confusion when someone only reaches out or initiates contact when they are intoxicated or in an altered state, leading to a one-sided or complicated relationship dynamic. If you're asking about the meaning or looking for an explanation of the phrase in general, it often reflects a scenario where communication or connection happens only under certain conditions (like being high), which can be hurtful or confusing to the other person involved. If you want, I can explain the song’s lyrics or the theme in more detail!